A grain dealer cheats to the extent of 10% while buying as well as selling by using false weights. His total profit percentage is :
let the retailer buys 110 gram in Rs 100 because of 10 % cheating
so cost price = 1 gram = Rs 100/110 = Rs 0.909
and retailer sells 90 gram in Rs 100
and hence selling price = Rs 100 / 90 = Rs 1.111
Profit % = $$\frac{1.111- 0.909}{0.909}$$ = 22.22%
Create a FREE account and get: