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?

A Tk. 55

B Tk. 50

C Tk. 45

D Tk. 40

Solution

Correct Answer: 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

Solution

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