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A car travels at $$\frac{8}{7}$$ times its usual speed and reaches the destination 15 minutes early. Then the time taken by the car in hours to reach its destination with its usual speed is
New Speed of car is 8/7 of old speedΒ
So new time is 7/8 of old timeΒ
8-7=1 unit =15 min earlyΒ
SoΒ original time is 8Γ15=120 min or 2 hr
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