3 3 × 12 4 × 12 mo. means, therefore, 3 × (4 of 12 mo.) or 3 x mo. 9 mo. 1. If the Welsh mills turned out in a certain year 576000 tons of tin plate and the American mills 22 as much, find the output of the American mills for that year. 2. A certain post office in one year handled 53678996 pieces of mail, of which were letters. Find the number of letters handled at that post office. 3. The records of a blast furnace show 1179360 tons of iron made during the year. If 5 of this iron is sold as No. 1 iron, find the number of tons of No. 1 sold. Multiplying a whole number by a mixed number. Written Work 1. Find the cost of 484 gallons of molasses @ $.88. Find the cost of: 2. 27% tons of hay at $12 a ton. 3. 31 yards of cloth at $.24 a yard. 4. 101 ounces of gold at $18.75 an ounce. 8. 147 bushels of potatoes at $.85 a bushel. 10. 2573 feet of curbing at $.38 a foot. 11. A street-car conductor collects on an average $3.60 per hour. How much does he collect in 11 hours? 12. In 4 days a carpenter worked 71⁄2 hours, 8 hours, 71 hours, and 61⁄2 hours. How much did the work cost at 45% per hour? 13. A ditch costs $.27 a rod. Find the cost of 2271⁄2 rods. 14. The "Pennsylvania Special" averages 58 miles per hour. How far does it travel in 163 hours? 15. A roller in a steel mill rolls 1183 tons, 2211 tons, 1931 tons, and 180 tons in four days. If he is paid $.12 per ton, how much should his pay envelope contain for the four days' work? 16. A car load of corn contains 821 bushels. How much is it worth at $.57 a bushel? 17. Three men in a day cut respectively 21 cords, 17 cords, and 2 cords of wood. How much does each receive for his work at $1.25 per cord? 18. At $26 per ton, how much will the rails for 18 miles of railroad cost, if it takes 1582 tons per mile? 19. Two men work respectively 231 days and 27 days in a month. How much more does one earn than the other, if each receives $2.25 per day? Multiplying a mixed number by an integer. In the problem 9 × 33, which number is the multiplier? the multiplicand? The multiplier usually precedes the sign X. 35. There are 161 ft. in a rod. How many feet are there in 12 rods? 36. Find the cost of 35 tons of railroad iron at $38 a ton. 37. At $1 each, how much will 40 "General Histories" cost? 38. If I sell 7 apples for 10 cents, how much shall I receive for 7 dozen apples? 39. When oranges are sold at 3 for 10 cents, how much will 3 crates carrying 180 each cost? 40. Stephenson's locomotive weighed 4 tons. Find the weight of a modern freight mogul weighing 40 times as much. 41. A mail boy averaged 135 per hour for 117 hours worked during the month. Find his earnings for the month. 42. A residence is lighted by 21 incandescent lights. The cost of each light per day is 1. Find the total electric light bill for a year of 365 days. 43. The average shipment of ore from a mine per week of 6 days is 347 tons. If $12 is the average profit realized from each ton of ore, find the net profit for 40 weeks. 10 44. A mail carrier's deliveries average 23 pounds. How many pounds of mail does he deliver in 2 trips each day for 312 days? 45. In a certain shoe factory a pair of shoes is finished every 3 minutes. Find the number of days of 10 hours each required to make 4600 pairs. 46. An establishment consumed in one year 8450 pounds of twine at 9 per pound; 361⁄2 dozen bottles of ink at $1.90 per dozen; 6 gross pens at 90 per gross; 500 pads of paper at per pad. Find the total cost of the purchase. 47. A real estate agent sold 6 pieces of land containing respectively: 10§ A., 121⁄2 A., 18 A., 265 A., 30% A., 33 A., at $250 per acre. Find the amount of the sale. 48. A town has a population of 3600. If the average amount of water used by each person is 63 gallons per day, find the number of gallons of water used in 90 days. 49. If a motorman receives $1 per hour, how much does he earn in 7 weeks of 6 days each, working 10 hours per day? Finding fractional parts of a fraction. 1. What is of 9 hours? of 9 feet? 2. What is of 9 tenths? of 9 tenths? 3. of 9 tenths means that we are to take of 9 parts of a unit that has been divided into 10 equal parts. 4. of how many tenths? 1 1% = |