The alloy is composed of copper, aluminum, zinc and tin. its copper content is 89.5%

The alloy is composed of copper, aluminum, zinc and tin. its copper content is 89.5%, aluminum and zinc 5% each, and tin 14 g. Determine the weight of the alloy in kilograms.

So, let’s assume that the entire alloy is 100%. Of these, 89.5% are occupied by copper, and 5% each – by aluminum and zinc. Therefore, the percentage occupied by tin is 100% – 89.5% – 5% – 5% = 0.5%

So 0.5% of the alloy equals 14 g. To calculate the total weight of the alloy, multiply 14 g by 100 and then divide by 0.5:

14 g × 100% / 0.5% = 14 × 200 = 2800 g

The entire alloy weighs 2800 g or, converting to a more convenient measurement system, 2.8 kg.

Answer: 2.8 kg