From the following data relating to a lorry of 4 tonne capacity, you are required to compute the operating cost per tonne-mile.

Truck cost Rs 1,00,000 Estimated life in years 10 Maintenance Rs 500 p.m.

Payment to driver and cleaners Rs 750 p.m.

Annual insurance Rs 1,200 Establishment charges Rs 650 p.m.

Fuel per month Rs 600 Sundry expenses en route Rs 2,000 p.a.

The lorry goes to a town 50 miles away with full load and comes back empty for 20 days in a month.