2 kg of an alloy that is 30% silver is melted with 3 kg of an alloy that is 60% silver. What percentage of the new alloy is silver?

Explanation

1. 01

   Silver: $0.3 \times 2 + 0.6 \times 3 = 0.6 + 1.8 = 2.4$ kg in 5 kg.

2. 02

   $\frac{2.4}{5} \times 100 = 48\%$.