Question

Patios can be made by mixing cubic meters of ash, stone, and wood chips in the ratio 5:7:3. How much stone is needed to make 45 cubic meters of patio?

Answer 1

21 m^3

Explanation:

5 + 7 + 3 = 15

The ratio of stone to the total is

7:15

If the total needed is 45 m^3, then we multiply both parts of the ratio by 3.

7 * 3 : 15 * 3

21:45

Answer: 21 m^3