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4q=ld. 4)879879 farthings. £ 272 12 6 12d. is. 12)219969 3q. over.

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20s. 1£. 20)183319 9d. over. £916 10s. over.

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20

5452 shillings.

6 two-pences in a shil.

32715 two-pences in all.

NOTE.-The 6d. make 3 twopences which are added in the last product.

LESSON 10.

In 6431 six-pences, how many pounds? Answer, £ 160 15s. 6d.

OPERATION.

2)6431 six-pences. 20)32115s. 1 six-pence over. £160 and 15s. 6d. over. LESSON 11.

In 35016 groats how many pounds? Answer, £ 583 12s. OPERATION.

3)35016 groats. 210)1167/2 shillings. £583 12s.

LESSON 12.

In 1678 dollars of 7s. 6d. each, how many six-pences? Answer, 25170 six-pences. 1678 dols.

15 six-pences=7s. 6d.

3 groats in a shilling.

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LESSON 13.

In 987 French crowns, how

LESSON 16.

In 279552 farthings how

many pieces of 5 cents each ?many dollars of 8s. each?

Ans. 21714 pieces.
OPERATION.

Ans. 728 dollars.
OPERATION.

1 crown=110 cents x 987279552-4=| 4)279552

1085705 = 21714.

987 crowns.

69888d.12 12) 69888

5824s. 8 8) 5824

110 cents in a crown. 728 dolls.

5)108570 cents.

21714 pieces.

LESSON 14.

In 728 dollars, N. Jersey currency, each 7s. 6d. how many pence and farthings? Ans. 65520d. 262080 grs. 728 dolls.

15 six-pences each.

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65520 pence.

262080

30920 six-pences. 6

65520 pence.

LESSON 17.

728

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4)44871

Dil

12)11217d. 3 qrs. over.
210) 9314s. 9d. over.
£ 46 14s. over.

LESSON 18.

A tenant was behind with

4 qrs. in d. his landlord for 16 years' rent at £5 10s. a year; how much was the debt?

LESSON 15. Reduce 728 dollars, NewYork currency, to pence and farthings, allowing each dollar to consist of 8 shillings. Make it 69388d. 279552 qrs. OPERATION. 728x8=5824s.x12=59888d.

x4 = 279552 qrs.

728 dollars.

8s. a dollar.

5324s.

12

69888d.

4

279552 grs.

Ans. £ 88. Dil. OPERATION.

£5 10

4

22 0 for 4 years.
4

11

£ 88 for 16 years.

LESSON 19.

£ 34 17 divided between 17 men, how much is that a piece? Ans. £2 1. Dil.

£34 17 17-£2 1s.

17)34 17(2£.

34

17)17(18.

17

LESSON 20.

A merchant had £102 12s. currency of New-York, which sum he exchanged for pieces of silver containing 5 cents, 10 cents, 25 cents, 50 cents, and 100 cents; he exacted an equal number of each: what was that number? Answer, 135.

OPERATION.

5+10+25+50+100=190 for a divisor.

£ 102 12-256 dols. 50 cents for a dividend.

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In 50 English guineas, how many dollars?

Answer, 233 dols. 35 cents.

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LESSON 23.

In 100 livres of 18.5 cents each, how many dollars?

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OPERATION.

455 guilders.

1850.0 cents.

LESSON 24.

In 445 guilders of 39 cents each, how many dollars?

Answer, 177 dols. 45 cents.

17745 cents.

39 cents in a guilder.

= 177 dols. 45 cents.

4095

1365

17745 cents.

LESSON 25.

In 1923 marks of Germany, how many dollars?

Answer, 641 dollars.

33 cents or one third of a dollar.

A mark =

=641 for dollars.

19233

LESSON 26.

Reduce £ 578 sterling of Great Britain into dollars. Make it 2566 dollars, 32 cents.

578 pounds.

OPERATION.

256632 cents →

444 cents in 1 pound. 2566 dols. 32 cents.

2312

2312

2312

256632 cents.

END OF PART EIGHTH

INTRODUCTION TO ARITHMETIC,

PART IX.

CONTAINING,

PROPORTION, INTEREST, REBATE, BARTER, LOSS AND GAIN, SINGLE AND DOUBLE FELLOWSHIP.

PROPORTION.

PROPORTION, is commonly called the Rule of Three; because a question or problem in this rule, has three numbers given to find a fourth; and in ancient times it was called “The Golden RULE OF THREE," by reason of its usefulness For, by this rule, we can solve many crafty, critical, and astonishingly curious questions, which could not be done without knowing this method in calculation.

EXAMPLE.

If 2 bushels of corn cost 6 shillings, what will 4 bushels cost?

RULE.

Multiply the second and third numbers together, and divide their product by the first; the quotient will be the fourth number or answer.

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This answer can be calculated mentally, that is, by the head, and very soon too; but such easy examples are most like

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