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Q.
A person travels from K to L a speed of 50 km/hr and returns by increasing his speed by 50%. What is his average speed for both the trips ?
A.
55 kmph
B.
58 kmph
C.
60 kmph
D.
66 kmph
View Answer
Correct choice: C
Explanation:
Speed on return trip = 150% of 50 = 75 km/hr. Average speed = (2 x 50 x 75)/(50 + 75) = 60 km/hr.
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