Question

The total rainfall in Forks, Washington, this October was 8 3/8 in. In September, 60% less rain fell than in October.

How much rain fell in September in Forks, Washington?



Express your answer as a mixed number in simplest form.

Answer 1

If the amount of rainfall in September in Forks, Washington is x
Then
100x/60 = 67/8
10x/6 = 67/8
5x/3 = 67/8
5x * 8 = 67 * 3
40x = 201
x = 201/40
Answer = 5 1/40 inches
Hope this helps