In a sports club with 30 members, 17 play badminton and 19 play tennis and 2 do not play either.?
February 24, 2010 - 4:11 am
How many members play both badminton and tennis?
30 – 2 = 28 who play badmitton and/or tennis
28-19 = 9 who just play badminton
17-9 = 8 who play both badminton and tennis
February 24th, 2010 at 9:53 am
There are 28 members who play badminton, tennis or both. The total of 17 and 19 is 36. This means there must be 8 who play both.
References :
February 24th, 2010 at 10:03 am
2 doesn’t play either of them, so you only have to look at the 28 players.
17 + 19 = 36. So we are over 28 by 8. Therefore, 8 of them has to play both tennis and badminton.
It cannot be more than 8 because then that would change the values of 17 and/or 19.
Answer: 8
References :
February 24th, 2010 at 10:17 am
30 – 2 = 28 who play badmitton and/or tennis
28-19 = 9 who just play badminton
17-9 = 8 who play both badminton and tennis
References :