Answer the following question, with explanation first.
On each of 7 Mondays, it rained 1.5 centimeters. On each of 9 Tuesdays it rained 2.5 centimeters. How many more centimeters did it rain on Tuesdays than Mondays?

12
Mondays: 7 * 1.

5 = 10.

5.

Tuesdays: 9 * 2.

5 = 22.

5.

22.

5 - 10.

5 = 12 cm.

It rained 12 centimeters more on Tuesdays than on Mondays.

.

The answer: 12