LESSON XLII. 1. 12 is 6 per cent. of what number? NOTE. Since 1812, 180=2, and 188 - 200. 2. 15 is 10 per cent. of what number? 100 times 2 7. Sold rye so as to gain 25 cents a bushel, which was 20 per cent. of what it cost; what did it cost? 8. Paid 80 cents for making a vest, which was 20 per cent. of the cost of the cloth; what was the cost of the cloth? 9. Bought a horse for $160, which was 20 per cent. less than his true value; what was his true value? 10. If I buy a carriage for $228, at 24 per cent. less than what I can sell it for, what can I sell it for? NOTE. 100 per cent.- 24 per cent. since 10228, 188=300. 76 76 per cent., and 11. A sells a lot of dry goods for $50, at 30 per cent. above cost; what did the goods cost him? 12. A sells B a watch, and gains 10 per cent. ; B sells it again to C, and gains 20 per cent.; C pays $110; how much did it cost A? 13. Bought a cargo of flour, at 20 per cent. less than $7 a barrel, and sold it at 4 per cent. more than $7 a barrel; what per cent. was gained? 14. Sold 2 horses, at $200 apiece; on one there was a gain of 20 per cent., and on the other a loss of 20 per cent.; was there a gain or a loss on the sale of the two, and of how much? 15. An apple-woman bought apples at 60 cents a hundred, and sold them at 1 cent apiece; how much per cent. did she gain? 16. When cloth is bought at $1.20 per yard, and sold at $1 per yard, how much per cent. is the loss? 17. Bought cloth at 80 cents per yard, and sold it at $1 per yard; how much per cent. is gained? 18. If a horse, be bought for $80, and a cow for $25, and sold so as to gain 16 per cent., how much is received for them both? 19. Bought a horse for $200, which was 20 per cent. less than his worth, and sold him at 95 per cent. of his value; how much was gained? 20. If a barrel of flour is bought for 8 of its market price, and sold for 4 per cent. more than the market price, how much per cent. is gained? 21. What per cent. does a merchant lose, who sells corn at 80 cents a bushel which cost him 90 cents? 22. Bought 12 barrels of flour for $110, and sold the same again for $9.50 a barrel; how much was the gain or loss? 23. I have a house which brings in of its value every 6 years; how much per cent. do I gain on it a year? 24. A bought goods for $100, and sold them to B so as to gain 10 per cent.; B sells them again to C, and gains 20 per cent.; how much did C pay? How much in money could A have made, if he had sold them himself to C, at the same price C paid? 25. A bought goods, and sold again to B at 10 per cent. more than he gave; B sells to C, and makes 20 per cent.; how many per cent. would A make, were he to sell to C himself at the same price B got? 26. John Robinson buys a cargo of coal for $520, and sells it so as to gain 12 per cent.; for how much does he sell it? 27. Having a house worth $1400, I charge for it $9 per month; how many per cent. a year do I get for it? 28. A grocer bought 100 eggs, at 15 cents a dozen, but 16 of them proved bad, and he sold the rest at 18 cents a dozen; how much per cent. did he gain? 29. Charles Thompson sells to John Johnson goods which he bought for $100, and gains 10 per cent.; he also sells some of the same goods to Peter Williams, and gains 30 per cent. ; how much would Johnson gain if he were to sell all he bought to Williams at the same price Thompson sells to Williams? 30. If I sell to A, a retail dealer, and gain 10 per cent., and to B, who is one of A's customers, and gain 30 per cent., how much would A gain by selling to B at the same price as I sell to B? 31. If James has 50 per cent. more money than John, how many per cent. has John less than James? 32. Having a farm of 154 acres, worth $20 an acre, I let half of it at 5 per cent. a year on its value, and cultivated the other half myself, getting back $115 beyond all expenses; is it better for me to let my farm, or use it myself, and how much difference is there? 33. Two men go into partnership; A puts in $200, and B $150; their profits are $32; how much per cent. do they gain on their capital, and what is each one's share? 34. Buying $150 worth of goods, I lose 14 per cent., but at the same time I buy $360 worth, and gain 9 per cent.; do I gain or lose on my whole capital, and how much? 35. A sells to B for $6 goods which he bought for $5; B sells again to C, and loses 10 per cent.; C sells to D at $7 what cost him $6; how much per cent. would A gain by selling directly to D? 36. A man gains 20 per cent., in each of three years, upon what he had at the beginning of the year; how much more then has he than when he began? LESSON XLIII. 1. What is the interest of $1 or 100 cents for 1 year, at 6 per cent. by the year? NOTE. INTEREST is money paid for the use of money. It is reckoned at so many per cent., usually by the year. 6 per cent. means that $6 must be paid on every hundred dollars, 6 cents on every $1 or 100 cents, and so on. Hence, the interest on $1 or 100 cents for 1 year, at 6 per cent., = 6 cents. 2. If the interest of $1 for 1 year is 6 cents, what is the interest of $4 for 1 year? Of $5? 3. What is the interest of $1 for 2 years, at 6 per cent.? NOTE. Since the interest of $1 for 1 year, at 6 per cent., is 6 cents, for 2 years it will be 2 times 6 cents, which are 12 cents. 4. What is the interest of $1 for 3 years, at 6 per cent.? For 4 years? For 10 years? 5. What is the interest of $4 for 2 years, at 6 per cent.? Of $6? Of $8? 6. What is the interest of $10 for 3 years, at 6 per cent.? Of $12? Of $20?. 7. What is the interest of $50 for 1 year, at 6 per cent.? For 4 years? 8. What is the interest of $60 for 7 years, at 6 per cent.? For 9 years? 9. What is the interest of $1 for 1 year, at 6 per cent.? At 7 per cent.? At 5 per cent. ? 10. What is the interest of per cent.? At 7 per cent.? $10 for 1 year, at 6 At 5 per cent. ? $100 for 1 year, at At 5 per cent. ? 11. What is the interest of 6 per cent.? At 7 per cent.? 12. What is the interest of $100 for 5 years, at 7 per cent.? For 6 years? For 7 years? 13. What is the interest of $150 for 2 years, at 7 per cent. For 3 years? 14. What is the interest of $106 for 3 years, at 7 per cent.? At 8 per cent.? 15. What is the interest of $320 for 4 years, at 10 per cent.? At 12 per cent. ? 16. What is the interest of $415 for 5 years, at 7 per cent.? Of $540? 17. What is the interest of $100 for 1 month, at 6 per cent.? NOTE. Since the interest of $100 for 1 year, at 6 per cent., = $6, the interest for 1 month, or of a year, 11⁄2 of $6= = $50 cents. = $1/2 6 = = = 18. What is the interest of $10 for 1 month, at per cent.? Of $1? Of $6? 19. What is the interest of $60 for 2 months, at 6 per cent.? Of $9? Of $90 ? 20. What is the interest of $200 for 1 month, at 6 per cent.? Of $300? Of $370? Of $420? Of $426? 21. What is the interest of $100 for 4 months, at 6 per cent.? For 5 months? For 6 months? For 8 months? For 10 months? 22. What is at 7 per cent.? 23. What is the interest of $100 for 6 months, At 8 per cent. ? the interest of $100 for 4 years |