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rate of rainfall

Two rainstorms occurred in one week in a certain area. The first storm lasted 25 hours, and the second storm lasted 35 hours, for a total 2050ml of rain. What was the rate of rainfall for each of the two storms if the sum of the two rates was 70ml per hour?

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Let the rate for first be x ml/hr

Then the rate for second would (70 -x) ml ...