1.

12. A swimmer swims 300 m and then returns in 12 minutes. Find his speed in:(a) m/s(b) km/h

Answer»

Speed = distance/time

= 300m/12 min

= 300m/12*60s

= 5/12 m/s

= 5/12 * 18/5 km/hr

= 3/2 km/hr

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