1.

A 25 storeyed building has 5 lifts. The resulting waiting time is 35 sec and Return Travel Time is 175 sec. The number of lifts required for reducing waiting time to 25 sec, without increasing the lift speed, is _______________

A. 7.0 to 7.0
B. 6.0 to 7.0
C. 9.0 to 7.0
D. 4.0 to 7.0
Answer» B. 6.0 to 7.0


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