# What is the Cost Price of Pen? If

A trader sold a pen at a loss of 20%. If he sells the pen at Rs.12 more he would have gained 10%. The cost price the pen in (Rs.) is

- 60
- 40
- 30
- 22

**Answer: (2) 40
Explanation:-**

Let be the cost price is Rs.X

According to the question,

X x 80/100 + 12 = 110X/100

11X/10 – 4X/5 = 12

(11X – 8X) = 120

3X = 120

X = 120/3 = 40

Hence, the cost price is Rs.40.