A car covers four successive 6 km stretches at speeds of 25 kmph, 50 kmph, 75 km

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✪ Choose the correct option.

A car covers four successive 6 km stretches at speeds of 25 kmph, 50 kmph, 75 kmph and 150 kmph respectively. Its average speed over this distance is

A. 25 kmph
B. 50 kmph
C. 75 kmph
D. 50 kmph

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