Question

Concrete is made by mixing gravel, sand, and cement in the ratio 4: 3: 2 by volume. How much (Gravel, sand, cement) will be needed to make 27m^3 of concrete

Answer 1

Below

Explanation:

Gravel is 4 / (4+3+2) = 4/9 ths of the total

4/9 x 27 m^3 = 12 m^3 gravel

Similarly sand is 3/9th 3/9 * 27 = 9 m^3

and the rest is cement 6 m^3