A man traveled one-fourth of the total distance of his trip by car . He traveled the remaining distance on foot . The ratio of his walking time to driving time was 15:1 . Calculate the ratio of his driving speed to his walking speed .
A. 5:2
B. 5:1
C. 1:5
D. 2:5
E. 25:1
সঠিক উত্তরঃ
B.
5:1
Explanation:
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