The alloy contains 34% tin, how many grams of tin are in 240 grams of the alloy?

In order to calculate how many grams of tin are contained in 240 grams of alloy, let’s compose and solve the proportion.

Let’s start by looking at and analyzing the problem statement. The alloy is known to contain 34% tin.

We introduce the variable x and denote with its help the weight of tin in the alloy. And for 100% we will take the weight of the entire alloy.

We now have enough data to compose the proportion.

240 grams of alloy – 100%;

x gram of tin – 34%;

240 / x = 100/34;

Looking for an unknown middle term:

x = (240 * 34) / 100 = 8160/100 = 81.6 grams of tin in the alloy.