How to do math problems - Training Enrollment Network

How to do math problems

Master Wang drove from place A to place B at a speed of 60 kilometers per hour, and arrived in 12 hours.

The distance between Party A and Party B is 12x60 = 720km.

After coming back, he quickened his pace and walked 80 kilometers per hour.

The time to return to a place is: 720÷80=9 hours.

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