A car going 40 miles per hour set up on an 80 miles trip at 9.00 A.M. Exactly 10 minutes latter, a second car left from the same place and followed the same route, How far in miles per hour, was the second car going if it caught up with the first car at 10:30 A.M.?
A. 45
B. 50
C. 53
D. 55
সঠিক উত্তরঃ
A.
45
Explanation:
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