and. 21. To the sum of 1, 4, and §, add the sum of 3, 15, 22. To the sum of 3, §, and, add the sum of 1, 7, and 1. 216. Practical Uses of Cancellation. We have often seen that cancellation is useful in simplifying the work. It is of particular value in connection with mixed numbers. What is the product of, 45, 33, and 167? 11. Divide the product of 4, 7, 19, 21, and 64 by the product of 14, 38, 28, and 3. 12. Divide the product of 3, 9, 15, 38, 42, and 75 by the product of 19, 7, 3, 5, 27, 60, and 8. 13. Divide the product of 2, 3, 4, 5, 6, 7, 8, and 9 by the product of 10, 12, 14, 15, and 16. 14. How many times as much will it cost to transport 12 boxes of merchandise weighing 300 lb. each 200 mi., as to transport 6 boxes weighing 400 lb. each 75 mi., at the same rate per pound for each mile? 15. How many times as much will it cost to transport 3 boxes of merchandise weighing 400 lb. each a given distance, as to transport 2 boxes weighing 300 lb. each the same distance, at the same rate per pound? 16. A bushel contains 2150 cu. in. The capacity of an orange box, 12 in. by 12 in. by 26g in., is how many cubic inches more than 13 bu.? 17. A bushel contains 2150 cu. in. In shipping Georgia peaches a crate 8 in. by 12 in. by 22 in. is used. This contains how many cubic inches more than 1 bu. ? 18. A bushel contains 2150 cu. in. In New Jersey a bushel cranberry box is 12 in. by 83 in. by 22 in. How does this differ in capacity from the bushel? 19. California apples and pears for local use are shipped in a 50-pound box 22 in. by 10 in. by 12 in. How does this differ in capacity from the bushel of 2150 cu. in.? 20. A California cantaloupe crate is 38 in. long, 16 in. wide, and 15 in. deep. This is how many cubic inches? 21. The California orange box is sometimes 26 in. by 114 in. by 114 in., and sometimes 22 in. by 73 in. by 171⁄2 in. Which holds the more, and how many cubic inches more? 22. Dried fruits are shipped in 50-pound or 25-pound boxes. The 50-pound box is 154 in. by 9 in. by 9 in. How many cubic inches in the box? 23. A 25-pound box for shipping dried fruit is sometimes 13 in. by 93 in. by 5 in., and sometimes 16 in. by 9 in. by 5 in. Which box holds the more, and how much more? 24. For shipping fruit out of the state, the sizes of some of the boxes used in California are as follows: Plums, 18 in. by 113 in. by 4 in. Find the number of cubic inches in each box. |