the cost of production of a radio set is rupees 900 , divided between material, labour and overheads in the ratio 3:4:2 . calculate the cost of0 material used in the radio set is marked at a price that clears 20% profit on the cost price , what is the marked price of the set? subsequently , the cost of material , labour and overheads increases by 20%,30% and 10%.res. calculate the cost of manufacture now and the marked price to clear the same %profit as before.