the cost of manufacturing a popular model car is made up of three items:cost of raw material,labour and overheads- in a year the cost of three 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 ? Answers
A) 7.67%  B) 6%  C) 0.54%  D) 9.54%  E) 8.54%
before increase total cost = 4+3+2= 
<gadget id="calculator">4+3+2</gadget>
<output>9</output>
9,   after increasing the cost= 9.54   so increase of .54 over 9 , equal to 6%   ANSWER:6%
<result>B</result>
the cost of manufacturing a popular model car is made up of three items:cost of raw material,labour and overheads- in a year the cost of three 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 ?