A collection of books want on sale and two third of them was sold for tk. 30 each. If none of the 36 remaining books were sold, what was the total amount received for the books that were sold?

A Tk. 180

B tk. 135

C tk. 90

D tk. 60

Correct Answer: Option E

Here, 1/3 of the unsold book= 36 so, 2 X 1/3 or 2/3 of total book = 36 x 2 =72 Total mount = (72 X 2.30)= 165.6 tk