Question

There are two sections in a class. A test was conducted in both these sections. The average marks of the first section is 60 and that of the second section is 50. If the overall average of the entire class spanning these two sections is 54 and the number of students in the first section is 24, then what is the number of students in the second section?

• A. 24
• B. 36
• C. 60
• D. 44

Answer 1

The correct option is B 36

Let ‘S’ be the number of students in the second section.

$Then,\frac{60+24+50\times S}{24+S}=54$

$\Rightarrow 60\times 24+50\times S=54\times 24+54\times S$

⇒ S = 36

Hence, option B is the correct answer.