22706
Unique Id: 18760
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DIRECTIONS
for the question:
Solve the following question and mark the best possible option.
A man can reach a place in 40 hours. If he reduces his speed by 1/4
th
, he goes 50 km less in that time. Find his speed.
A)
10 km/h
B)
8 km/h
C)
6 km/h
D)
5 km/h
D
Let speed be s km/h.
Then, Distance travelled = s × 40 = 40s
Also, when the speed reduces to 3/4
th
, 50km less are travelled in that time i.e. 40 hours.
40s - 50 = (3s/4) × 40 = 40s - 50 = 30s
Implies 10s = 50 ; Speed of the man = s = 50/10 = 5 kmph
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