(a) At $5.20 a ton, how much will 4600 lb. of coal cost? (h) Change 148 yd. to feet. 3 pk. are (i) Change 15 yd. to inches. (r) How many square inches in a 5-foot square? 1. A rectangular solid has faces. Each face is a rectangle. 2. Some or all of the faces of a rectangular solid may be squares. 3. If each face of a rectangular solid is a square, the solid is called a 4. If some of the faces of a rectangular solid are oblongs, the solid is not a cube. is 5. The area of a rectangular surface 3 inches by 4 inches square inches. 6. The solid content of a rectangular solid 3 in. by 4 in. by 2 in. is cubic inches. is 7. The area of a rectangular surface 3 inches by 5 inches square inches. 8. The solid content of a rectangular solid 3 in. by 5 in. by 2 in. is cubic inches. is 9. The area of a rectangular surface 2 inches by 5 inches square inches. 10. The solid content of a rectangular solid 2 in. by 5 in. by 3 in. is cubic inches. 10. Five sixths of 30 are 1 third of 11. One sixth of 48 is 2 thirds of (i) Five sixths of 366 are 1 half of what number? (j) One sixth of 852 is 2 thirds of what number? much in 12 days as he can earn in 9 days. $24 in 9 days, in 12 days he can earn If he can earn dollars. (k) If a man can earn $840 in 9 months, how many dol lars can he earn in 12 months. 13. If 9 lb. of nails are worth 33 cents, 12 lb. are worth cents. (1) If 9 cords of wood are worth $42.75, how much are 12 cords worth? 20. Twenty-five per cent of 80 sheep are 21. Twenty-one sheep are 25% of 22. Twenty-five sheep are 23. Forty sheep are per cent of 75 sheep. per cent of 60 sheep. sheep. sheep. Mr. A collected money for Mr. B. It was agreed that Mr. A should keep 3% of all he might collect to pay him for his trouble. He collected $375; he should keep $11.25 and " mainder to Mr. B. "pay over (d) How much should Mr. A “pay over" to Mr. B? (e) Find 7% of $465. (g) Find 3% of $422. 2. 36 is 75% of (i) 453 is 75% of what? (k) Forty-eight dollars are (f) Find 9% of $324. the re (h) Find 7% of $538. 3% of what? This means, $48 are 3 hundredths of how many dollars? Operation. $483 $16. = Explanation. One hundredth of the unknown number is $16 × 100 = $1600. $16. 100 hundredths (the whole) are NUMBER STORY. A lawyer collected some money for 3% of the amount collected; his share (commission) was $48; the amount collected was $1600. (1) How much should the lawyer pay over to the man for whom he collected the money? |