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