Question

Seller marks book wd prices which is 20%more than cp and allow a discount of 10 %on it gain percent is ?

Answer 1

Answer:10%

cp=x

sp=x+20x/100-10x/100

sp=x+x/5-x/10

sp=11x/10

p=sp-cp

p=11x/10-x

p=x/10

p%=p/cp*100

x/(10*x) *100

1/10*100

10%