If after selling 30 pens, the seller observes the profit of sell price of 10 pens, then the profit percentage is

Question of The Day15-05-2023

If after selling 30 pens, the seller observes the profit of sell price of 10 pens, then the profit percentage is-

Answer

Correct Answer : b ) 50%

Explanation :

Let SP be a pen's selling price and CP be a pen's cost price.

It is given that,

by selling 30 pens, a profit equal to the selling price of 10 pens is achieved.

30*(SP - CP) = 10SP

20SP = 30CP

SP/CP = 3/2

Profit % = (SP - CP) *100/CP

Profit % = (SP/CP - 1) * 100

Profit % = (3/2 - 1) * 100

Profit % = 50

Hence, (b) is the correct answer.

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