Question

In a school, 156 students passed geography or history. There were 75 students who passed in both subjects. If 9 more passed Geography than history, find how many were taking each subject?

Answer 1

Answer:

A=X

B=9+X

P(AUB)=P(A)+P(B)-{P(A) intersection P(B)}

156=9+X+X-75

156+75-9=2X

222= 2X

>X=111

no. of students who qualified history are 111

and

no. of students who qualified geography are 111+9=120