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Choose the correct option.
Raghav had to walk a certain distance. He walked half the distance at a speed of 4 km/hour and the remaining half at a speed of 5 km/hour. If the total time taken was 9 hour, the distance was
A9 km
B20 km
C40 km
D50 km
Answer: Option (Login/Signup)
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Asked In ::
SHORTCUT
Physics: Average Speed X Time = Distance
Therefore => 2XY / X Y x Time = Distance
=>2x5x4/5 4 x 9 = Distance
=>40/9 x 9 = Distance
=> D = 40 km
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