THE PERIMETER OF A SQUARE LAWN CONSISTS OF FOUR STRAIGHT PATHS. ANU...

3. - ĐỀ THI OLYMPIC TOÁN TMO VÒNG CÁ NHÂN
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3.

The perimeter of a square lawn consists of four straight paths. Anuma and Gopal

started at the same corner at the same time, running clockwise at constant speeds

of 12 and 10 kilometres per hour respectively. Anuma finished one lap around the

lawn in 60 seconds. For how many seconds were Anuma and Gopal together on

the same path in one lap?

Answer :

seconds