You can now buy 5 more oranges with TK. 75 due to reduction in price by 20 percent. Calculate the current price of one dozen of oranges?

A 24

B 30

C 36

D 32

Correct Answer: Option C

20% of 75 tk is: 75*20/100

= 15 tk

Thus,

one can buy 5 oranges with 15 tk.

one can buy 1 orange with 15/5 tk = 3 tk

Now,

Price of 1 orange is 3 tk

Price of 12 oranges (1 dozen) is 3*12 tk = 36 tk