A man starts climbing hill. Every minute he ascend 20 yards but slips down 5 yards. How long will he take to touch a point of 80 yards height?
A. 7 minutes
B. 5 minutes 20 seconds
C. 5 minutes
D. 6 minutes
সঠিক উত্তরঃ
C.
5 minutes
Explanation:
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