Question

"Help

The ratio for concrete on page 58 is 1: 3 : 4.

Michael now needs to make 64 kg of

concrete. Determine the mass of cement,

sand, and gravel he needs to mix together"

Answer 1

Let Michael takes x unit of cement and 3x unit of sand and 4x unit of gravel.

Now he wants to make 64 kg of concrete so

x+3x+4x=64

=>8x=64

=>x=8

So cement requires x=8 unit