Help needed at once!!!?

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Help needed at once!!!?

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Help needed at once!!!?

10-16-2008, 11:15 AM

#1 (permalink)

PHYSICS GURU

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Join Date: Oct 2008

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Help needed at once!!!?

A student played 500 computer games and won 370 of them.
He then played x games and lost none.
He has now won 75% of all the games he has played.
Find the value of x.
Sorry fo the wrong section.This is an IGCSE exam question and I have checked the Mark Scheme(Answers) and there the answer given is 20.I cant get it.They have solved it like this.
370+x/500+x = 3/4

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