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Mathematics 12 Online
OpenStudy (anonymous):

9. Your daily workout plan involves a total of 40 minutes of running and swimming. You burn 20 calories per minute running and 10 calories per minute swimming. Let r be the number of minutes you run. How many calories will you burn in your 40 minute workout if you run for 20 minutes?

OpenStudy (anonymous):

20*20 + 20*10 = 600 calories

OpenStudy (anonymous):

thank you

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