Mr. Karim purchased Tk. 600 worth of traveler’s cheques. If each cheque was worth either Tk. 20 or Tk. 50, which of the following cannot be the number of Tk. 20 cheques purchased?

Mr. Karim purchased Tk. 600 worth of traveler’s cheques. If each cheque was worth either Tk. 20 or Tk. 50, which of the following cannot be the number of Tk. 20 cheques purchased?

A 10

B 15

C 18

D 20

Solution

Correct Answer: Option C