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You have 40 minutes to exercise at the gym, and you want to burn 300 calories total using both machines. How much time should you spend on each machine?A photo shows an elliptical trainer marked as 8 calories per minute and a stationary bike marked as 6 calories per minute.

Sagot :

akimcf5279

Answer

8(40-y) + 6y =300

320 - 8y + 6y =300

-2y=-20

y=10

This leaves x to be 30.

You should spend 30 minutes on machine 1 and 10 minutes on machine 2.

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