Suresh drives his car to a place 150 km away at an average speed of 50 km/hr and returns at 30 km/hr. what is his average speed for the whole journey ?
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since it took her 3 hours to get there and 5 hours back that makes a total of 8 hours the and back soo...
150km/3h +150km/5h
or (150+150)÷8
300÷8=37.5
150km/3h +150km/5h
or (150+150)÷8
300÷8=37.5
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