Question

if the cost prize of 15 pens is equal to the cost price of 20 pens ,find the gain or loss percent? plz tell step by step​

Answer 1

Hope this'll help you.

Answer 2

=> Let the cost price of a pen = C

=> So cost of 15 - pen = 15c

=> If the selling price of a pen = S then the selling price of 20 - pens = 20S

=> So 15C = 20 s

=> S = 15/20 = 3/4 c

=> Loss % = ( C.P - S.P ) / S.P × 100

=> Loss % = ( C - 3 / 4c ) / c × 100

=> Loss % = 25 %

I hope this will help you dear..

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