Answer Posted / mrinal kumar brahma

Mix ratio 1(cement):2(sand):4(aggregate)

For 1m3 concrete:

1.51(constant)/(Sum of ratio, i.e 1+2+4=7)=0.216

For cement= 0.216x28.57(constant)=6.2 bag

For sand=0.216x2(sand ratio)=0.43 m3

For aggregate=0.216x4(aggregate ratio)=0.86 m3

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