Question

An alloy of copper and zinc contains copper and zinc in the ratio 5:2. Another a
copper and zinc contains copper and zinc in the ratio 3:4. Seven kg of alloy A.
21 kg of alloy B are mixed together to form a new alloy. What will be the ratio of 2
and Copper in the new alloy?​

Answer 1

Answer:

first alloy have 5:2 and 3:4

but second have 15:6 and 9:12 so

copper have ratios. in 1:3 and the zinc will have 1:3 also