A storm dropped 5 inches of rain in the first thirty minutes. In the next 30 minutes, the hurricane dropped half that amount of rain. It then dropped 1/2 inch of rain for the next hour. What was the average rainfall total for the duration of the storm? Let's be accurate as possible.
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The storm dropped 5 inches then half that amount so 5 / 2 = 2.5 inches. The next hour the storm dropped 1 / 2 inch of rain for 1 hour so 1 * .5 = .5 inches. All total the storm dropped 5 inches + 2.5 inches + .5 inch for = 8 inches. It rained for 2 hours total so 8 / 2 = 4 inches of rain per hour.
The answer: 4.
Assistant