Point off three places, when price is dollars; five if dollars and cents. (2680 × 111⁄2 = 30820; 30820 ÷ 2 = 15.410.) Ans. $15.41.
When the long ton of 2240 pounds is used.
Rule.—Multiply the weight by the price and divide the product by 2.240.
Find the cost of 4800 pounds coal, at $63⁄4 per long ton. (4800 × 63⁄4) ÷ 2.24 = $14.46, Ans.
To find the cost of grain, when the price per bushel and weight is given.
Rule.—Reduce the weight to bushels, and multiply by the price.
Find the cost of 3570 pounds of shelled corn, at 36c per bushel.
| 56 | ) | 3570 | ( | 63 | .75 | bu. |
| .36 | ||||||
| Ans. $22.9500 | ||||||
To reduce pounds of shelled corn to bushels, divide by 56. At 36c per bushel, 63.75 bushels come to $22.95.
Find cost of 2900 pounds of wheat, at 57c per bushel.