Maria bought a discount on 20 percent discount on its original pice.She sold it with 40 percent increase on the priceshe bought.Her percentage on th profit?

A) 12%
B) 20 %
C) 28 %
D) 30 %

Solution:

Let original price= 100

purchase price=80

selling price=80(140/100)

=112

=100=12%

profit=12 %