A book sells for 65 Tk. This price gives the seller a profit of 30% on his cost. What would be the new selling price if he cuts his profit to 10% of the cost?
সমাধান
সঠিক উত্তর: Option A
at 30% profit,
selling price 130 Tk when cost 100TK
selling price 1 Tk when cost 100/130 Tk
selling price 65 Tk then cost 100 X 65/130 tk=50 Tk
then, at 10% profit, when buying price 50 Tk then selling price=50 X 110/100= 55 Tk
