Question

By selling 50 pens, a shopkeeper gained the amount equal to the selling price of 10 pens. What is his profit?

Answer 1

let 1 pen costs 1 rupee then
Profit (P) =10
S.P.=50
So, C.P.=40
P%=(10×100)/40
P%=25

Answer 2

Solution:

The profit earned by the shopkeeper is Rs 10

Explanation:

Let us suppose that the selling price of 1 pen is Rs 1

Hence, when the shopkeeper sells 50 pens then the selling price of 50 pens will be Rs 50

Now, we have been given that the shopkeeper gained the amount equal to the selling price of 10 pens.

The price of 10 pens should be Rs 10 and this should be equal to the profit as per the given directions.

Therefore, the profit is Rs 10.