Question

O BIC
What
per cent above the cost price of an item should a shopkeeper mark his goods so
that after allowing a discount of 30%, he still gains 10%?​

Answer 1

Answer:

57.14%

Step-by-step explanation:

Given,

What  per cent above the cost price of an item should a shopkeeper mark his goods so  that after allowing a discount of 30%, he still gains 10%?​

gain=10%

discount=30%

let CP=100

SP=(100+gain)*CP/100

SP=110*100/100

SP=110

shopkeeper must mark MRP above the cost price

let x be that price

MRP=(100+x)

Discount will be given on MRP

(100-Discount)%*MRP=SP

(100-30)%*(100+x)=110

70%(100+x)=110

x=57.14%