Faruk covers d miles in the first hour,e miles in the second hour and f miles in the third hour what is the average rate for the entire trip?
A. def
B. 3 def
C. 3 (def)
D. 1/3 (d+e+f)
সঠিক উত্তরঃ
D.
1/3 (d+e+f)
Explanation:
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