Question

65 g of an alloy of copper and zinc contains 1.5 g of zinc. What will be the mass of the alloy that contains 4 g of copper? ​

Answer 1

Answer:

1) 4.5 grams of alloy gives 3.5 grams of copper.

Then,

2) Let 18.9 grams of alloy gives y grams of copper.

Let, required weight beY.

Y = (18.9×3.5)÷(4.5)

Y = 14.7 grams....

So,

Required weight of copper is 14.7 grams.