Question

Two alloys A and B contain silver and copper in the ratio 5:1 and 7:2, respectively. Find the ratio in which they be mixed such that there be 80% of silver. (1) 3:2 (2) 2:3 (3) 1:3 (4) 3:4 (5) None of these​

Answer 1

Answer:

2;3 is the correct answer