Question

A gold coin weigh 20 grams. If the coin contains gold,copper and tin and in the ratio 4:3:1 how much gold is there in the coin ? Explain ???????

Answer 1

4 + 3 + 1 = 8
20 ÷ 8 = 2.5

since the ratio is 4:3:1 and gold being 4
4 × 2.5 =

10
10 grams