Question

260. 400 students appeared in an exam and 60% of the boys and 80% of
the girls passed. If the total pass % is 65%, then how many girls
appeared for the exam.
(C)
(A) 300
(B) 200
(C) 100
(D) 400​

Answer 1

Answer:

(D) 400​

Explanation:

Let Boys be x, and girls be y.

So total , x+y=400

60x/100 boys cleared and 80y/100 girls.

now  {( 0.6x +0.8y)/400 }*100= 65

0.15x +0.2y =85

So  

x=300

and y=100(girls)