Question

A man purchased 10 pens. He sold 5 pens at 25% profit and the remaining 5

pens at
`16 (2)/(3)`% loss. If he received Rs 625 in total, find the cost price of each pen.

help!!!​

Answer 1

Rs 60

Explanation:

`5x * (1+25\%)+5x * (1-16(2)/(3)\%)=625`

`5x(1+0.25)+5x(1-1/6)=625`

`5x(1.25)+5x(5/6)=625`

`10.416667x=625`

`(10.416667x)/(10.416667)=(625)/(10.416667)`

`x=59.99999...`

`x=60`