A car travels first 450 kms of a journey at a speed of 90 kmph and the remaining 750km at a speed of 50kmph. Find the average speed of the whole journey
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average speed =total distance travel upon (/)total time taken
speed =450+750 /upon 90+50and answer is8.57km/hr
speed =450+750 /upon 90+50and answer is8.57km/hr
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