If a person walks at 15 km/hr instead of 9 km/hr, he would have walked 3 km more in the same time. What is the actual distance (in kms) travelled by him?
Let time = x
15x - 9x = 3
x = 0.5hr
distance = 9x = 9(0.5) = 4.5km
So the answer is option C.
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