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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 percent of the games he has played Find the value of x?
Wiki User
∙ 14y ago
(370 + x)/(500 + x )=3/4 Multiply both sides by (500 + x) gives 370 + x = 375 + 3x/4 which gives x/4 = 5 so x = 20 Check: Total games 530, total won 390 = 75% success. QED
Wiki User
∙ 14y ago
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Total games played 25 they won 9 more than they lost and 2 are ties how many games did they won?
Designate w as the number of games won. The total of 25 must be the sum of the number of games won, the number lost, and the number tied. From the statement of the problem, the number of games lost must be 9 more than the number of games lost, or w + (w-9) equals number of games played minus number of games tied, or 2w - 9 = 25 - 2; 2w = 23 + 9 = 32; w = 16.
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