Question

bob the builder is making 480 kg of concrete mix concrete is made by mixing cement, sand and gravel into the ratio 1 : 3 : 4 how much sand does he need

Answer 1

Answer:

(Let the quantities be x)

1x+3x+4x=480

8x=480

x=480/8

x=60

so,

1x=1×60=60 kg→ quantity of cement

3x=3×60=180 kg→quantity of sand

4x=4×60=240 kg→quantity of gravel

Therefore the amount of sand required is 180 kg

Step-by-step explanation:

Hope this helps you