Question

In a survey, one fifth youth like cell phone only and 32 don't like cell phone at all. Also, 60% youth like camera but 16 like none of them. Find how many youth like both the things? ANSWERS​

Answer 1

(1/5)*100=20

n(C) =no. of cell phone lover youth=20

n(cam)=no. of camera lover youth=(60/100)*100=60

n(C U Cam)=20+32+60+16=128

n(C intersection Cam)=n(C)+n(cam)-n(C U Cam)

n( C intersection Cam)=20+60-128

n( c intersection cam)=48

hence 48 people like cell phone and camera