Question

Yu Xing paid 3.60 dollar for 2 pens after a 10 percent discount .What was the usual price of 1 pen.

Answer 1

2 $

Explanation:

let the original price be x

price after 10% discount = 3.60$

`x - (10)/(100) * x = 3.60`

`(100x - 10x)/(100) = 3.60 \\ (90x)/(100) = 3.60 \\ 9x = 36 \\ x = 4`

The original price of 2 pens is 4$

original price of one pen = 4/ 2

= 2 $