30 pens and 75 pencils were purchased for 510. If the average price of a pencil was 2.00, find the average price of a pen. Choose the correct choice from the following answers:  A) 10  B) 11  C) 12  D) 13  E) 14
Since average price of a pencil = 2   ∴ Price of 75 pencils = 150   ∴ Price of 30 pens = (510 – 150) = 360   ∴ Average price of a pen = 360⁄60 = 12   Answer 12
<result>C</result>
30 pens and 75 pencils were purchased for 510. If the average price of a pencil was 2.00, find the average price of a pen.