A shopkeeper marked his goods at 12.5% more and offers a discount of 22.22%. He cheats to the extent of 25% while buying as well as while selling by using false weight. Find the overall profit percentage.

36.71

Let us assume Cost price for 1 kg quantity is Rs 720.
Marked price = 9/8(720) = Rs 810
Selling price = 7/9(810) = Rs 630
He bought 1250 gms at Rs 720.
This implies he bought 1000 gms at Rs 576
He sold 750 gms at Rs 630
This implies he sold 1000 gms at Rs 840
Profit % = 840-576/576 * 100 = 45.83%
Hope this helps!

82.1