SOLUTION: In a class of 200 students , 120 play soccer and 100 play cricket . If a student has to play at least one game, what percentage of them play cricket but not soccer ?

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Question 995526: In a class of 200 students , 120 play soccer and 100 play cricket . If a student has to play at least one game, what percentage of them play cricket but not soccer ?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
A + B - AB = 200

A is the number who play soccer.
B is the number who play cricket.
AB is the number who play both.

A = 120
B = 100

120 + 100 - AB = 200

220 - AB = 200

AB = 220 - 200 = 20

20 play both.

this means that:

100 play soccer only.
80 play cricket only.
20 play both.

100 + 80 + 20 = 200

solution is:

80 play cricket but not soccer.