A man has to go 10 km to catch a bus. He walks part of the way at 7 km/hr and runs the rest of the way at 12 km/hr. If he takes 1 hour 15 minutes to complete his journey, find how far he walked.
A. 10 km
B. 1 km
C. 7 km
D. 4 km
E. None of these
সঠিক উত্তরঃ
C.
7 km
Explanation:
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