PROBLEMS IN PERCENTAGE 1. 920 lb. or 23% of a load of grain is wheat. How many pounds does the load weigh? 2. (a) In a baseball game, Fred's team scored 14 runs. If Fred made 2 runs, what per cent of the 14 runs did he make? (b) If the other team made 6 runs, what per cent of all the runs did Fred's team make? 3. A bat and ball cost $1.50. If 334% of this sum was paid for the bat, what did the ball cost? 4. A huckster bought berries at 8¢ a quart and sold them at 12¢. His gain was what per cent of the cost? 5. 35 gallons of Jersey milk contained 8.05 gallons of What per cent of the 35 gallons was cream? cream. 6. A man lost $127.50 by selling a village lot. If this was 15% of the cost, what did the lot cost? 7. A merchant sold goods for $25.63 less than the marked price. If this reduction was 10% of the marked price, what was the marked price? 8. A grocer bought a crate of cherries containing 32 quarts for $2.88. He sold them at 12 cents a quart. His gain was what per cent of the cost? 9. 84.20 is what per cent of 421? 10. Find 3% of $5600. 11. Find 662% of 927 tons. 12. 54 is what per cent of 900? 13. 386% of 244 what? = 14. 23% of a number is 7000. Find the number. 15. The entire amount raised by tax in a city this year is $125,700. Of that sum $41,900 is used to maintain the schools. From these statements make a percentage problem and solve it. 16. This load of hay weighs 2200 lb., the wagon 1200 lb., and the team 2600 lb. (a) The weight of the hay is what per cent of the entire weight? (b) The weight of the wagon is what per cent of the entire weight? (c) The weight of the team is what per cent of the entire weight? (d) How many tons must the bridge support? REVIEW AND PRACTICE Give results rapidly: (Oral) 1. 3648 (Say "36, 76, 84."); 43 +25; 81+ 19 2. 9324 (Say "93, 73, 69."); 82 - 19; 48 - 28 $1.00; 25¢ +?= $2.00; 71¢ +?= $100 25 × 6; 331 × 3; 40 × 8 3. 60¢? 4. 20 × 20; = 5. 12 X? 108; ? x 15 = 60; 36 X ? = 72 6. = 7. 8. 9.5; 2÷ 10; 3÷4; 4 ÷ 7 10. $.25 X 8; $.331 × 3; .621 × 8; .66 × 3 11. Give Roman numerals for 12; 15; 28; 45; 81; 99. 12. 15 X 10; 32 x 100; 4 x 1000; 58 X 1000; 90 × 100 13. 4.5 × 10; 7.1 × 100; 3.45 × 10; .84 × 1000 14. 4 gal. of gasoline at 22¢ per gal. cost how much? 15. 5 gal. of gasoline cost $1.15. What was the price per gallon? 16. 253 ÷ 10; 341 100; 7 ÷ 100; 47.5 1000 832 ÷ 1000; 17. What is the cost of a dozen garden hoes at 331 each? 18. At 25¢ a pound, how much meat will $3 buy? 19. What will a 10-lb. turkey cost at 28¢ per pound? 20. 3 boxes of berries cost 25e. What will 12 boxes cost? 21. When 7 boxes of crayons will last a school 5 months, how long will 28 boxes last? 23. Ten per cent of a ton of hay is how many pounds? 24. How many dozen are there in 4 gross of pencils? 25. How much butter fat is there in 200 lb. of milk when a test shows that 4% of it is butter fat? 26. When each step is 8 in. high, how many steps are needed to reach a platform 6 ft. high? 27. 250 lb. of salt will fill how many 5-lb. sacks? 28. What is 120% of 5 miles? 29. Find the cost of: a. 64 lb. of pork at 121. b. 600 boxes of berries at 81¢. g. 16 knives at 621¢. h. 24 sleds at 87¢ apiece. i. 80 lb. rice at 61¢. 30. A man spent 20% of his salary for rent, 10% for clothing, 5% for fuel and light, 25% for food, and 20% for other things. What per cent of his money did he spend? What per cent did he save? If he saved $400 a year, what was his salary? 31. How many bushels of beets will $12 buy at 331¢ a bushel? 32. $16 will rent a boat for how many hours at 16¢ an hour? 33. What change will be left from a $20 bill after paying for 12 hours' labor at 37¢ an hour? 34. At 16 a dozen, how many ears of corn will $2 buy? 35. A boy in Philadelphia buys papers at the rate of 3 papers for 4¢ and sells them at 2¢ apiece. He cannot compute his profit on one paper. Can you tell him what it is? 36. What is the area of a rectangle 51 inches by 4 inches? 37. What is the cost of a dozen tomato plants at the rate of 4 for 5 cents? 38. At 10¢ a dozen, how many sheets of sandpaper will 5¢ buy? 39. A clerk in a rubber store sold 5 oz. of dentist's rubber. The price was $5.80 per pound. To find the cost of 5 oz. the clerk divided $5.80 by five. How would you have found it? 15. Four and twenty thousandths by twenty-six and nine tenths. 16. How much a ton do I pay for coal when .375 of a ton costs me $1.875? 17. At what rate per hour is a launch running when it goes 132.3 miles in 13.5 hours? 18. A farmer buys groceries, and sells farm produce to the grocer as follows: Groceries. 10 gal. oil at 25¢ 3 dozen oranges at 40¢ Farm Produce 25 lb. honey at 18¢ 72 lb. smoked ham at $.23 In whose favor is the balance of this account, and how much is due him? 19. 10% of a man's income was paid for rent. If his rent was $15 a month, what was his income per year? 20. After using 70% of his month's wages, Jerry had $14.40 left. What were his month's wages? |