The rectangle is 30 cm long and 18 cm wide. By what percentage is one side smaller than the other?

Since you need to find the difference in percentage, first we find the sum of the lengths.

1) 30 + 18 = 48 cm

Then imagine 48 as 100 percent, then find the percentages of the sides.

We get:

2) 30/48 * 100 = 0.625 * 100 = 62.5 percent

3) 18/48 * 100 = 0.375 * 100 = 37.5 percent.

Now let’s find the difference in length and width.

4) 62.5 – 37.5 = 25 percent.

Answer: 25 percent longer than width.