A car passes Dhaka at 9:55 am and Gazipur at 10:15 am. Gazipur is 30 miles from Dhaka. What is the average speed of the car in miles per hour?
A. 10
B. 30
C. 90
D. 120
E. None of these
সঠিক উত্তরঃ
C.
90
Explanation:
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