Question 108343
Maria practiced the recorder for 40 minutes on Saturday. She practiced 10 minutes less in the afternoon than in the morning. How many minutes did Maria practice in the morning? in the afternoon?

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Let "x" be number of minutes she practiced in the morning.
Then she practiced "x-10" in the afternoon.
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EQUATION:
x + x-10 = 40
2x = 50
x = 25 minutes (time she practiced in the morning.
x-10 = 15 minutes (time she practiced in the afternoon.
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Cheers,
Stan H.