A group of 42 children all play tennis or football or both.
The same number play tennis as play just football. Twice as many play both tennis and football as play just tennis.
How many of the children play football?
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Let, football played by the children be x
tennis played by the children be 2x
ATP
2x+x = 42
=) 3x = 42
=) x = 42/3
=) x = 14
Ans:- 14 children played football.
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