Question

In an alloy, the ratio of copper and zinc is 5 : 2. If 1.250 kg of zinc is mixed in 17 kg 500 g of alloy, then the ratio of copper and zinc in the alloy will be ______.

Options

• 1 : 2

• 2 : 1

• 2 : 3

• 3 : 2

Answer 1

In an alloy, the ratio of copper and zinc is 5 : 2. If 1.250 kg of zinc is mixed in 17 kg 500 g of alloy, then the ratio of copper and zinc in the alloy will be 2 : 1.

Explanation:

The original 17.5 kg alloy contains 12.5 kg copper and 5 kg zinc. After adding 1.25 kg zinc, the ratio is 12.5 : 6.25 = 2 : 1.