Question

Zinc and copper are in the ratio of 5 3 in 400 grams of an alloy. How much of copper should be added to make the ratio 5 5

Answer 1

Zinc and Copper are in the ratio of 5 : 3 in 200 gm of an alloy. How much grams of copper be added to make the ratio as 3 : 5 ?

Ans:- 133×1÷3      i.e 133×1 upon3