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a man walks at a speed of 6km/h for 1km /h and 8km/h for next 1km .what is average speed for walk of 2 km. |
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Answer» TOTAL TIME taken= (1/6 +1/8) HRS =7/24 hrs average SPEED= 2÷7/24 =48/7 km/h =6.857 km/h (approx) |
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