Question

A shopkeeper makes a profit of 20 percent by selling 21 pens per rupee, how many pens should he sell per rupee to make 40 percent profit?

Answer 1

Answer:

let the selling price of 1 pen be Rs 1

so selling price of 100 pens is Rs 100

he gained selling price of 20 pens

means he gained Rs 20

cost price = selling price-profit

=100-20

=80

Cost price=Rs 80

profit percent=profit/cost price×100

=20/80×100

=25

So he gained 25%

Step-by-step explanation:

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