6. George bought a ream of paper for $2 and sold it at the rate of 2 sheets for a cent; he gained cents. 7. Arthur bought a ream of paper for $2.25 and sold it (a) Twenty thousand feet are how many feet less than four miles? (b) Five miles are how many feet more than 25000 feet? 10. One thousamd feet are nearly one -th of a mile. (c) Two fifths of a mile are how many feet more than 2000 feet? (d) of a mile, than 3000 ft.? MEASUREMENTS. 1. In one cubic yard there are cubic feet. (a) To dig a cellar 15 feet long, 12 ft. wide, and 6 feet deep would require the removal of how many cubic feet of earth? (b) How many cubic yards? (c) How many square feet in the floor of the cellar described in problem (a)? (d) How many sq. yards? 2. To make an excavation 2 yards long, 2 yards wide, and 2 yards deep would require the removal of cubic yards. (e) How many cubic feet in the excavation described in problem 2 ? 3. The area of one of the faces of a 2-yard cube is square yards; of all the faces, square yards. (f) The area of all the faces of a 2-yard cube is how many square feet? REVIEW. 4. A piece of lan 20 rods by 8 rods contains (g) How many acres in a piece of land 20 rd. by 46 rd.? 5. A shed 16 feet long, 10 feet wide, and 6 feet high contains cubic feet. (h) How many cords of wood will the shed described in problem 5 contain? Find the number of acres in each of the following: (i) 80 rods by 24 rods. (k) 20 rods by 52 rods. (j) 40 rods by 73 rods. (1) 30 rods by 84 rods. Find the number of cords in each of the following: (m) 8 ft. by 12 ft. by 8 ft. (0) 16 ft. by 4 ft. by 8 ft. (n) 16 ft. by 8 ft. by 8 ft. (p) 20 ft. by 8 ft. by 8 ft. hundredths. 10. Three fourths of .32 are 1 half of (i) Three fourths of 9.36 are 1 half of what number? (j) One half of 9.36 is 4 fifths of what number? 11. If .32 of an acre of land is worth $20, .40 of an acre is worth dollars. (k) If .32 of an acre of land is worth $24.56, how much is .40 of an acre worth at the same rate? 12. If .40 of a ton of coal is worth $4.00, .32 of a ton is worth (1) If .40 of a ton of coal is worth $3.25, how much is .32 of a ton worth? 4)9.86 2.40 *Think as suggested by the following: of 9 is 2 with 1 remainder; 1 = 10 tenths; 10 tenths +8 tenths are 18 tenths; of 18 tenths is 4 tenths with 2 tenths remainder; 2 tenths = 20 hundredths; 20 hundredths+6 hundredths 26 hundredths; of 26 hundredths = 6 hundredths with 2 hundredths remainder; 2 hundredths = 20 thousandths; of 20 thousandths = { thousandths. 13. In a certain orchard there were 120 trees; 10% of them were pear trees and 30% of them were cherry trees; there were pear trees and cherry trees. 14. In another orchard there were 24 pear trees; these were 30% of all the trees in the orchard; there were trees in the orchard. 15. There were 60 trees in an orchard; 42 of them were apple trees and the remainder pear trees; there were pear trees; per cent of the trees in the orchard were apple trees and per cent of them were pear trees. 16. Twenty-five % of the trees in an orchard died and were removed; there remained 36 trees; trees died. (g) A lawyer's commission for collecting money was 10%; he collected $954. How much of the money should he keep? and how much should he "pay over" to the man for whom he collected the money? (n) A lawyer's commission for collecting money was 10%; his commission amounted to $76.20. How much did he collect? and how much should he "pay over" to the man for whom he collected the money? sion $75.40 of this sum and paid the remainder to the man for whom he collected the money; the lawyer's commission for collecting was -%. |