Qualification > Sciences
Maths & Physics Help
sweetsh:
Dont worry
Zain-Xa:
i have another doubt.........
A student played a computer game 500 times and won 370 of these games.
he then won the next "x" games and lost none.
he has now won 75% of the games he has played.
Find the value of "x"
(pls show hw u got ur answer)
zara:
its vry simple.....u do it like this...
total games played=500+x
games won=370+x
therefore,,,
370+x=(75/100)(500+x)
370+x=375+0.75x
375-370=x-0.75x
5=0.25x
x=5/0.25
x=20
chk d answer wid ms n if its rong lemme kno....
nemor doubts...plz don't hesitate ;)
godfather93:
ok now, the total number of games he's played is 500 + x.
the number of games he's won is 370 + x
The number of games he has won is 75% of (500 + x). (cause it says that he won 75% of the total games played)
hence, 370 + x = 75/100 * (500 + x)
370 + x = 375 + 0.75 x
0.25x = 5
x = 20
godfather93:
guess we posted at the same time! lol :D
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