Give the step-by-step reasoning process and then the final answer. Ruth goes to school 8 hours a day and 5 days a week. She is in math class 25% of this time. How many hours per week does she spend in math class?
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She is in school for 40 hours because 5 x 8 = 40. She is in math class for 10 hours a week because 40 x .25 = 10.
The final answer: 10.
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