a car moves through 20 km at a speed of 40 km/h and the next 20 km speed of 60 km/h calculate its average speed.
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.................. 50 69
sherkhan92:
mc
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T1 =1/3 T2=1/2 Total time=5/6
Total distance =40
40 ➗ 5/6
=48km/hr
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