if the selling price of 5 pens is equal to cost price of 4 pen then gain or loss percent is

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Answer:I hope you understand MARK ME AS BRAINLIEST

Answer:20% loss

Step-by-step explanation:Let the CP of 4 pens be 4.

Then the SP of 5 pens will be 4.

SP of 1 pen will be

5

4

.

Loss on 1 pen =1−

5

4

=

5

1

Loss percent =

5

1

×100=20%