A concrete mixer is in volume proportions of 1 part cement, 2 parts water, 2 parts aggregate, and 3 parts sand. How many cubic feet of each ingredient are needed to make 54cu ft of concrete?

Step-by-step explanation:

The total volume of cement in cubic feet to be made is 54 cu ft.

A concrete mixer is in volume proportions of 1 part cement, 2 parts water, 2 parts aggregate, and 3 parts sand. This means that the ratio of the ingredients is

1 : 2 : 2 : 3

Total ratio = 1 + 2 + 2 + 3 = 8

Therefore,

Volume of cement needed would be

1/8 * 54 = 6.75 cubic feet

Volume of water needed would be

2/8 * 54 = 13.5 cubic feet

Volume of aggregate needed would be

2/8 * 54 = 13.5 cubic feet

Volume of sand needed would be

3/8 * 54 = 20.25 cubic feet