I am buying stationery for use in the office. I have 23 staff in the office and need to get 2 pens and 1 notebook for each of them. The pens are sold in packets of either 10 or 12 and the notebooks are sold in packets of 8 or 10. I decided to buy just the larger packets of each and save any extra ones. I told my assistant how many packets of pens and notebooks to buy, but when he returned I found that he had bought the smaller packets in each case. I am going to buy sufficient extra pens and notebooks that I need for my staff singly.

Question

anonymous · Answer

A single pen will cost 12¢ and a single notebook will cost 35¢.
How much do I need to pay for the extra pens and notebooks?
A 36¢ 
B 72¢
 C $2.81 
D $3.06
 E $3.17