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Question

The cost of running a mini train is partly fixed and partly variable. When 50 tickets are sold, the average cost per ticket is Rs. 45. When 70 tickets are sold, the average cost per ticket drops to Rs. 42. Find the average cost per ticket when 90 tickets are sold.

A Rs.40.5

B Rs.72.5

C Rs.32.7

D Rs.52.5

E None of these

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