Number of Cubic Feet

[Guest]

2 parts of cement, 5 parts of sand, and 9 parts of rock / gravel are used under heavy buildings. In the proportions 1:2:5, 1 barrel of cement, 9 cu. ft. of sand, and 20 1/4 cu. ft. of rocks / gravel.

Determine cu. ft. of concrete.

Unsure how to solve.

[Guest]

Please reply. Thanks.

[Guest]

Please respond, Thanks.

[Guest]

To determine the total volume of concrete, we need to add up the volumes of the individual components (cement, sand, and rock/gravel) that are used.

One barrel of cement is equivalent to 5 cubic feet.

So, the volume of cement is 1 x 5 = 5 cubic feet.

The volume of sand used is 9 cubic feet.

And the volume of rock/gravel used is 20.25 cubic feet.

Therefore, the total volume of concrete is 5 + 9 + 20.25 = 29.25 cubic feet.

[Guest]

Ok, Thanks.