12. If the wages of 12 weeks come to 60 dollars, what is that a month ? and how much for 5 weeks? 13. If 7 horses eat 14 bushels of oats in 1 week, how many bushels would 15 horses eat in the same time ? 14. If 3 horses eat 8 bushels of oats in 2 weeks, how long would it take them to eat 40 bushels ? 15. If i horse eat 1 bushel of oats in 3 days, in how many days would 4 horses eat 36 bushels ? 16. If 2 men spend 12 dollars in 1 week, how many dollars would 3 men, at the same rate, spend in 5 weeks ? 17. If a staff 3 feet long cast a shadow of 2 feet at 12 o'clock, what is the length of a pole that casts a shadow 18 feet at the same time of day? 18. If 47 gallons of water, in 1 hour, run into a cistern containing 108 gallons, and by a pipe 38 gallons run out in an hour, how much remains in the cistern in an hour ? and in how many hours will the cistern be filled ? 19. If 4 men can do a piece of work in 8 days, how many men would it take to do the same work in 4 days? 20. If 6 men can do a piece of work in 9 days, in how many days would 2 men do it? 21. If 8 men can do a piece of work in 5 days, in how many days would they do a piece of work 4 times as large ? 22. If 7 men can do a piece of work in 3 days, how many men would it take tc do a piece of work 5 times as large in the same time ? 23. If 8 men can do a piece of work in 4 days, in how many days would 2 men do a piece of work one half as large ? 24. A man bought a cask of wine containing 63 gallons, 3 sevenths of which leaked out; and he sold the remainder for 36 dollars ; how mueh per gallon did he sell it for? 25. If a cask of wine cost 48 dollars, what is 5 eighths of it worth? 26. A man bought 7 oranges for 6 cents apiece, and sold them all for 54 cents, how much did he gain by the bargain ? 27. A man bought 8 yards of cloth for 56 dollars, and sold it again for 9 dollars a yard; how much did he gain by the bargain ! 28. A man bought 8 barrels of flour for 40 dollars; how much must he sell it at per barrel to gain 16 dollars ? 29. A man bought five firkins of butter at 7 dol lars a firkin ; how much must he sell it per firkin to gain 10 dollars ? 30. A man gave 35 cents for his breakfast, which was 5 eighths of what he gave for his dinner; what did he give for his dinner? 31. A ship's crew of 6 men have provision for 3 months ; how many months would it last 1 man ? 32. A ship's crew have provision sufficient to last 1 man 27 months; how long would it last 9 men ? 33. A ship's crew have provision sufficient to last 3 men 10 months ; how long would it last 5 men ? 34. A man built 40 rods of wall in a certain time, another man can build 9 rods while the first builds 5; how much would he build in the same time? : SECTION VII. If the combinations in this section should be found too difficult, they may be omitted until reviewing the book. A. 1. A man being asked the age of his eldest age ? son answered, that his youngest son was six years old, and that 2 thirds of the youngest son's age was just 1 fifth of the eldest son's age. Required the age of the eldest son ? 2. 2 thirds of 6 is 1 fifth of what number? 3. A man being asked how many sheep he had, said that he had them in two pastures ; in one pasture he had eight; and that 3 fourths of these was just 1 third of what he had in the other. How many were there in the other? 4. 3 fourths of 8 is 1 third of what number ? 5. Two boys talking of their ages, one said lie was 9 years old. Well, said the other, 2 thirds of your age is exactly 3 fourths of my age, now if you will tell me how old I am, I will give you as many apples as I ạm years old. What was his 6. 2 thirds of 9 is 3 fourths of what number? 7. Two boys counting their money, ore said he had ten cents. The other says, 4 fifths of your money is exactly 2 sevenths of mine ; now if you will tell how many I have, I will give you 1 half of them. How many had he ? 8. 4 fifths of 10 is 2 sevenths of what number? 9. 5 sixths of 12 is 2 thirds of what number? 10. 6 sevenths of 14 is 4 ninths of what number? 11. 6 fifths of 15 is 2 thirds of what number ? 12. n ninths of 18 is 2 fifths of what number? 13. 4 fifths of 20 is 8 sevenths of what number? 14. 8 sevenths of 21 is 6 tenths of what number? 15. 5 sixths of 24 is 10 sevenths of how many times 5! 16. 3 sevenths of 28 is 2 eighths of how many times 7 ? 17. 4 fifths of 30 is 6 sevenths of how niany times 8? 18. 6 eighths of 32 is 8 ninths of how many times 5! 19. 4 ninths of 36 is 8 tenths of how many times 6? 20. 3 fourths of 40 is 5 sevenths of how many times 3 ? 21. 6 ninths of 45 is 3 fifths of how many times 22. 5 sixths of 48 is 10 sevenths of how many times 3 ? 23. 4 sevenths of 63 is 6 fifths of how many times 8? 24. 5 ninths of 72 is 4 sevenths of how many times 9 ? B. 1. 4 fifths of 15 is 6 tenths of how many thirds of 21 ? 2. 4 thirds of 18 is 8 ninths of how many sevenths of 35 ? 3. 6 sevenths of 21 is 2 thirds of how many thirds of 24 ? 4. 5 fourths of 24 is 10 sevenths of how many fifths of 40 ? 5. 5 eighths of 32 is 2 fifths of how many fifths of 35 ? 6. 4 sevenths of 63 is 6 eighths of how nany ninths of 45 ? 7. 3 sevenths of 56 is 4 ninths of how many fourths of 28? 8. 3 eighths of 64 is 6 tenths of how many sixths of 30 ? 9. 2 eighths of 72 is 3 tenths of how many fifths of 40 ? C. 1. Two times eleven are how many ? 6. Two times sixteen are how many ? 7. Two times seventeen are how many ? 8. Two times eighteen are how many ? 9. Two times nineteen are how many ? 10. Two times twenty are how many ? 11. Three times eleven are how many ? 12. Three times twelve are how many ? 13. Three times thirteen are how many ? 14. Three times fourteen are how many ? 15. Three times fifteen are how many ? 16. Three times sixteen are how inany ? 17. Three times seventeen are how many ? 18. Three times eighteen are how many ? 19. Three times nineteen are how many ? 20. Three times twenty are how many ? 21. Four times eleven are how many ? 22. Four times twelve are how many ? 23. Four times thirteen are how many ? 24. Four times fourteen are how many ? 25. Four times fifteen are how many ? 26. Four times sixteer are how many ? 27. Four times seventeen are how many ? 28. Four times eighteen are how many ? 29. Four times nineteen are how many ? 30. Four times twenty are how many ? 31. Five times eleven are how many ? 32. Five times twelve are how many ? 33. Five times thirteen are how many ? 34. Five times fourteen are how many ? 35. Five times fifteen are how many ? 36. Five times sixteen are how many ? 37. Five times seventeen are how many 38. Five times eighteen are how many ? 39. Five times nineteen are how many ? 40. Five times twenty are how many ? 41. Six times eleven are how many ? 42. Six times twelve are how many ? |