Question

an alloy contains copper and zinc in ratio 7:3 if it contains 12.6g copper. ,how much did the alloy weight​

Answer 1

Answer:

I hope you understand. this is solved by unitary method .

Answer 2

Answer:

let the ratio of copper and zinc be 7x,3x

ATQ-

7x=12.6

x=12.6/7

x=1.8

7x=12.6g

3x=3*1.8=5.4g