Question

(u) 12 km
45. A mixture of cement, sand and gravel in the ratio
of 1:2:4 by volume is required. A person wishes
to measure out quantities by weight. He finds that
the weight of one cubic foot of cement is 94 kg, of
sand 100 kg and gravel 110 kg. What should be the
ratio of cement, sand and gravel by weight in order
to give a proper mixture?
av 47:100:220 (b) 94:100:220
(c) 47:200:440 (d) None of these​

Answer 1

Answer:

isv alvwk wkvs ksbkw ksbkw ksvos l.