A class of 20 students borrowed library books for their research projects. Some of the students borrowed 3 books each, and the rest borrowed 2 books each. lf a total of 52 books were borrowed, how many of the students borrowed 3 books each?

A class of 20 students borrowed library books for their research projects. Some of the students borrowed 3 books each, and the rest borrowed 2 books each. lf a total of 52 books were borrowed, how many of the students borrowed 3 books each?

A 8

B 9

C 10

D 12

Solution

Correct Answer: Option D

3 টি করে বই নেয় x জন

2 টি করে বই নেয়(20-x) জন

A.T.Q,

2(20-x)+3x= 52

x=12