Question

The cp of 10 pens is equal to the sp of 12 pens .find his gain or loss percent

Answer 1

HI HERE IS THE ANSWER

Answer 2

Let the cost price of 1 pen = 1.

Given that Cost price of 10 pens = selling price of 12 pens.

So, cost price of 12 pens = 12.

Selling price of 12 pens = 10.

Here, Cost price > Selling price. So Loss has occured.

Now,

⇒Loss = Cost price - selling price

⇒ Loss = 12 - 10

⇒ Loss = 2.

We know that Loss% = (Loss/CP) * 100

⇒ (2/12) * 100

⇒ 16.67%.

Therefore, the Loss% = 16.67%

Hope it helps!