Since average price of a pencil = 2
∴ Price of 75 pencils = 150
∴ Price of 30 pens = (450 – 150) = 300
∴ Average price of a pen = 360⁄60 = 10
30 pens and 75 pencils were purchased for 450. If the average price of a pencil was 2.00, find the average price of a pen.

A. 10
B. 11
C. 12
D. 13
E. 14