Asadullah khan

A grocer wants to mix nuts which sell for Rs 40 per kilo with nuts which sell Rs 90 per kilo in order to make a mixture which could sell for Rs 70 per kilo.How many kilos of each should be mixed to get a mixture of 630 kilos?

A company car is purchased for Rs 23580 and is expected to be driven 95000 miles before being sold.The expected salvage value for the car is Rs 2300.Find the unit depreciation for the car.