An emergency vehicle travels 10 miles at a speed of 50 kilometers per hour. How fast must the vehicle travel on the return trip if the round trip travel time is to be 20 minutes?
A. 75 Kmph
B. 20 Kmph
C. 45 Kmph
D. 78 Kmph
সঠিক উত্তরঃ
A.
75 Kmph
Explanation:
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