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Get access to the detailed solutions to the previous years questions asked in IIFT exam
It is given that,
v is proportional to √w
v = k √w +y
It is given,
56 = 2k + y (w = 4)
and y = 72 (w = 0)
Solving we get
k = -8
-8√w+y = 0
w = 81
Therefore, maximum number of wagons with which engine can just move is 80.