Maths MCQs, PLANNING OFFICER/ DEPUTY DISTRICT OFFICER (PLANNING) (BPS-17)P & D Department. 2014, PPSC Solved Past Papers MCQsA carton contains 10 boxes each box containing one dozen cubes. How many cartons are needed to fill 960 cubes.A. 7 B. 8 C. 9 D. 12 If the cost of 1 dozen mangoes is Rs 20 what is the cost of 3 1/2 dozen mangoes?There is a limit everything in life.