## Question

**If the cost price of 12 pens is equal to the selling price of 8 pens, the gain percent is ?**

A. 50%

B. 60%

C. 10%

D. 12%

#### Answer: A. 50%

**Solution:**

We know we will need gain amount to get gain percent, right.

So lets get gain first.

Let the cost price of 1 pen is Rs. 1

Cost of 8 pens = Rs. 8

Selling price of 8 pens = 12

Gain = 12 – 8

= 4

**Gain% = (gain/cost × 100)% **

= (4/8 × 100)%

**= 50%**

**Hence, the gain percent is 50%.**

**Similar Question**

**If selling price is doubled, the profit triples. Find the profit percent ?**