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There are 600 boys in a hostel. Each plays either hockey or football or both. If 75% play hockey and 45% play football, how many play both ?
a. 48
b. 60
c. 80
d. 120
Read Solution (Total 3)
-
- ((75*600)/100)+((45*600)/100)-600
d.120 - 9 years agoHelpfull: Yes(6) No(1)
- 120 is the answer.450 members plays only hockey., 270plays only football. So both game players 120
- 6 years agoHelpfull: Yes(1) No(1)
- 120 use formula total=n(a)+n(b)-both(ab)+none(ab) here none(ab)=0 why because each plays either hockey or football or both.and here n(a)=75%of600,n(b)=45%of 600
- 6 years agoHelpfull: Yes(0) No(0)
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