Question

An alloy contain 30%copper 42%nickeland rest zinc.find the mass of zink in 1kg of alloy

Answer 1

Percentage of zinc in alloy = 100% - (30% + 42%) = 26%

26% of 1 kg = 26/100 × 1 kg = 0.26 kg = 260 g

∴ 260 g of Zinc is present in 1 kg alloy