the cost of manufacturing a popular model car is made up of 3 items : cost of raw material , labour and overheads - in a year the cost of 3 items were in the ration of 4 : 3 : 2 . next year the cost of the raw material rose by 10 % , labour cost increased by 8 % but overhead reduced by 5 % . then % increase int the price of the car ?
before increase total cost = 4 + 3 + 2 = 9 , after increasing the cost = 9.54 so increase of . 54 over 9 , equal to 6 % answer : b
subtract(add(add(multiply(divide(4, add(add(4, 3), 2)), add(const_100, 10)), multiply(divide(3, add(add(4, 3), 2)), add(const_100, 8))), multiply(divide(2, add(add(4, 3), 2)), subtract(const_100, 5))), const_100)