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During a heavy rainstorm, a city in Florida received

12 1/4 inches of rain in 25 1/2 hours. What is the approximate
rainfall rate in inches per hour?

A about 2 inches per hour

B about 1/4 inch per hour

C about 1 inch per hour

D about 1/2 inch per hour

1 Answer

7 votes

Answer: D. About
(1)/(2) inches per hour.


Explanation:

1. The city received
12^{(1)/(4)} inches of rain in
25^{(1)/(2)} hours.

2. Let's write the mixed number as decimal numbers:


12^{(1)/(4)}in=12.25in


25^{(1)/(2)}h=25.5h

3. To find the approximate rainfall rate in inches per hour, you must divide 12.25 inches by 25.5 hours, as following:


(12.25in)/(25.5h)=0.48(in)/(h)

4. If you round the result to the nearest tenth, you obtain:


0.5(in)/(h)=(1)/(2)(in)/(h)

5. Therefore, the answer is the option D.

User Rafael Motta
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