Question

1.To make a concrete, you mix cement, sand and gravel in the ratio 1 : 2 : 4 ,
What is the ratio of cement to gravel ?

Answer 1

Answer:

Step-by-step explanation:

Required volume ratio = 1:2:4

given : weight of 1cubic foot of cement=94kg

weight of 1cubic foot of sand=100kg

weight of 1cubic foot of gravel=110kg.

Taking the ratio by volume; cement:sand:gravel=94:100:110

required ratio = 1:2:4

ratio for proper mixture = 94:2*100:4*110

dividing by 2,we get 47:100:220 (answer).