Question

IF the cost of 5 pens is

equal to selling price of 4
pen of same kind, Find profit
percentage.​

Answer 1

here your answer

Explanation:

let cp of one pen be x

cp of 5 pen = 5x

cp of 5 pen = sp of 4 pen

5x = sp of 4 pen

4x = cp of 4 pen ( cp of 1 pen = x)

profit = 5x-4x

= x

profit % = profit / cp ×100 = x/4x × 100

= 25 %