Question

the cost price of 18 notebook is equal to the selling price of 15 notebooks find the gain percent ​

Answer 1

Answer:

20%

Step-by-step explanation:

let cp of 18 pens = sp of 15pens = x

cp of 1 pen x/18

sp of 15 pens = x/15

gain= x/15 -x/18

=x/90

gain%=x/90÷x/18×100

=20

HOPE IT HELPS

PLEASE MARK ME AS BRAINLEST