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Apothecaries use this weight in compounding their medicines, but they buy and sell by Avoirdupois weight. Apothecaries' is the same as Troy weight, having only some different divisions.

16. In 9 lb. 8 3. 1 3. 2 sč. 19 gr. how many grains ?

DRY MEASURE.

2 pints (pt.) make 1 quart, marked qt.
8 quarts

1 peck

pk. 4 pecks

1 bushel

bu. 8 bushels

1 quarter

qr. By this measure, salt, ore, oysters, corn, and other dry goods are measured.

17. At 43 cents a peck, what cost 14 bu. 3 pks. of wheat ?

18. At 3 cents a quart what will 5 bu. 2 pks. 3 qts. of salt come to ?

CLOTH MEASURE.

Ell Eng.

2 inches (in.) make 1 nail, marked nl.
4 nails

1 quarter

qr. 4 quarters

1 yard

yd. 3 quarters

I ell Flemish Ell Fl. 5 quarter.

1 ell English 5 quarters

1 aune or ell French. 19. At 27 cents a nail, what is the price of 2 yds. 1 qr. 3 nls. of cloth .

20. I.'1 qr. cost $2,50, what cost 43 ells English of broadcloth ?

21. At 42 cents a nail, what cost 13 ells Fl. 3 qrs. of broadclott. ?

22. How many seconds are there in 4 years ?

23. How many seconds are there in 8 y. 3 mo. 2 wks. 2 d. 19 h. 43 min. 57 sec. ?

24. How many calendar months are there from the 1st Feb. 1819, to the 1st August, 1822 ?

25. How many days are there from the 7th Sept. 1817, to the 17th May, 1822 ?

26. How many minutes are there from the 13th July, at 43 minutes after 9 in the morning, to the 5th Nov. at 19 min. past

3 in the afternoon ?

27. How many seconds old are you? 28. How many seconds from the commencement of the Christian era to the year 1822 ?

29. At 4 cents an ounce, how much would 3 cwt. 2 qrs. 18 lb. 7 oz. of snuff come to ? L

30. At 28 cents a pound, what would 3 T. 2 cwt. 3 qrs. 16 lb. of tobacco come to ?

31. If a cannon ball flies 8 miles in a minute, how, far would it fly at that rate in 7 y. 2 mo. 3 wks. 2 days ?

32. If a quantity of provision will last 324 men 7 days, how many men will it last one day ?

33. A garrison of 527 men have provision sufficient to last 47 days, if each man is allowed 15 oz. a day; how many days would it last if each man were allowed only 1 oz. a day?

34. A garrison of 527 men have provision sufficient to last 47 days, if each man is allowed 15 oz. a day; how many men would it serve the same time, if each man were allowed only 1 oz. a day?

35. If a man performs a journey in 58 days, by travelling 9 hours in a day, how many hours is he performing it ?

36. If by working 13 hours in a day a man can perform a piece of work in 217 days; how long would it take him to do it if he worked only 1 hour in a day ?

37. If by labouring 14 hours in a day 237 men can build a ship in 132 days, how many days would it take them, if they work only 1 hour in a day? How many men would it take to do it in 132 days, if they work only 1 hour in a day?

38. How many yards of cloth that is 1 qr. wide, are equal to 27 yards that is 1 yd. wide ?

39. If a piece of cloth that is 1 qr. wide is worth $67.25, what is a piece containing the same number of yards of the same kind of cloth worth, that is 1 yd. wide ?

40. If a bushel of wheat afford 65 eight-penny loaves, how many penny loaves may be obtained from it?

41. What is the price of 4 pieces of cloth, the first conlaining 21 yards, at $4.75 a yard; the second containing 27 yards, at $7.25 a yard; the third containing 18 yards, at $9.00 a yard ; and the fourth containing 32 yards, at $8.57 a yard?

42. A man bought 15 lb. of beef, at 9 cents a pound; 28 lb. of sugar, at $0.125 a pound; 18 gallons of wine, at

$1.56 a gallon ; a barrel of flour, for $8.00; and 3 barrels of cider, at $3.50 a barrel. How much did the whole amount to ?

Interest is a reward allowed by a debtor to a creditor for the use of money. It is reckoned by the hundred, hence the rate is called so much per cent. or per centum. Per centum is Latin, signifying by the hundred. 6 per cent. signifies 6 dollars on a hundred dollars, 6 cents on a hundred cents, £6 on £100, &c. so 5 per cent. signifies 5 dollars on 100 dollars, &c. Insurance, commission, and premiums of every kind are reckoned in this way.

Discount is so much per cent. to be taken out of the principal.

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43. If 1 dollar gain 6 cents interest a year, how much will 13 dollars gain in the same time?

44: What is the interest of $43.00 for 1 year at 6 per cent. ?

45. What is the interest of $157.00 for 1 year at 5 per cent. ?

46. What is the interest of $1.00 for 2 years at 6 per cent. ? What for 5

years

? 47. What is the interest of $247.00 for 3 years at 7 per cent ?

48. How much must I give for insuring a ship and cargo worth $150,000.00 at 2 per cent. ?

49. Imported some books from England, for which I paid $150.00 there. The duties in Boston were 15 per cent., the freight $5.00. What did the books cost me ?

50. What must I receive for a note of $275.00 that has been due 3 years, interest at 6 per cent. ?

51. A man failing in trade, is able to pay only $0.68 on a dollar ; low much can he pay on a debt of $5 dollars ? How much on a debt of 20 dollars ?

52. A man failing in trade, is able to pay only $0.73 on a dollar ; how much will he pay on a debt of $47.00 ? How much on a debt of $123.00 ? How much on a debt of $2,500.00 ? 2 53. A merchant bought a quantity of goods for 213 dollars, and sold them so as to gain 15 per cent. ; how much did he gain, and how much did he sell them for !

54. A merchant bought a quantity of goods for $843.00; row much must he sell them for to gain 23 per cent. ?

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SUBTRACTION.

VIII. 1.* David had nine peaches, and gave four of them to George; how many had he left ?

2. A man having 15 dollars, lost 9 of them; how many had he seft ?

3. David and William counted their apples ; David had 35, and William had 17 less; how many had William ?

4. A man owing 48 dollars, paid 29 ; how many did he then owe ?

5. A man owing 48 dollars, paid all but 19; how many did he pay ?

6. A man owing a sum of money, paid 29 dollars, and then he owed 19; how many did he owe at first ?

7, A man being asked how old he was when he was married, answered, that his present age was sixty-four years, and that he had been married 37 years; what was his age when he was married ?

8. A man being asked how long he had been married, answered, that his present age was sixty-four years, and that he was twenty-seven years old when he was married ; how long had he been married ?

9. A man being asked his age, answered, that he was 27 years old when he was married, and that he had been married 37 years.

What was his age ? 10. A man bought a piece of cloth containing 93 yards, and sold 45 yards of it; how many yards had he left?

11. A merchant bought a piece of cloth for one hundred and fifteen dollars, and sold it again for one hundred and thirty-eight dollars. How much did he gain by the bargain ?

12. A merchant sold a piece of cloth for 138 dollars, which was 23 dollars more than he gave for it; how much did he give for it ?

13. A merchant bought a piece of cloth for 115 dollars, and sold it so as to lose 23 dollars. How much did he sell it for ?

14. A man bought a quantity of wine for 753 dollars, but not being so good as he expected, he was willing to lose 87 dollars in the sale of it ; how much did he sell it for ? 15. A man owing two thousand, six hundred, and forty

* See First Lessons, sect. 1.

three dollars, paid at several times as follows; at one time two hundred and seventy-five dollars ; at another fifty-eight dollars ; at another seven dollárs ; and at another one thousand and sixty-seven dollars; how much did he then owe?

16. From Boston to Providence it is 41 miles, and from Boston to Attleborough (which is upon the road from Boston to Providence) it is 28 miles ; how far is it from Attleborough to Providence ? ! 17. From Boston to New York it is 250 miles ; suppose a man to have set out from Boston for New York, and to have travelled 14 hours, at the rate of five miles in an hour ; how much farther has he to travel ?

18. General Washington was born A. D. 1732, and died in 1799 ; how old was he when he died ? 19. Dr. Franklin died A. D. 1790, and was 84 years

old when he died ; in what year was he born ?

20. A gentleman gave 853 dollars for a carriage and two horses; the carriage alone was valued at 387 dollars ; what was the value of the horses ? How much more were the horses worth than the carriage ?

21. A man died leaving an estate of eight thousand, four hundred, and twenty-three dollars ; which he 'bequeathed as follows; two thousand, three hundred dollars to each of his two daughters, and the rest to his son ; what was the son's share ?

22. A gentleman bought a house for sixteen thousand, and twenty-eight dollars; a carriage for three hundred and eight dollars, and a span of horses for five hundred and eighty-three dollars. He paid as follows; at one time ninety-seven dollars; at another, one thousand, and eight dollars; and at a third, four thousand, two hundred, and six dollars. How much did he then owe ?

23. In Boston, by the census of 1820, there were 43,278 inhabitants; in New York, 123,706. How many more inhabitants were there in New York than in Boston ?

24. In Boston, by the census of 1810, the number of inhabitants was 33,250; and in 1820 it was 43,278. Whai was the increase for 10 years ?

25. A merchant bought 2 pipes of brandy for 642 dollars, aud retailed it at 3 dollars a gallon. How much did he gain?

26. A man bought 359 kegs of tobacco, at 9 dollars a keg; 654, barrels of beef, at 8 dollars a barrel ; 9 bags of coffee, at 29 dollars a bag. In exchange he gave 3 hhds.

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