A machine is sold at a profit of 10%. Had it been sold for Tk. 40 less, there would have been a loss of 10%. What was the cost price?
ক
Tk. 175
খ
Tk. 200
গ
Tk. 225
ঘ
Tk. 250
সঠিক উত্তর: Tk. 200
(10+10)= 20%