<PRE><B>Question 1121105</B>
A team won exactly 4 of their first 15 games.
 They then played N remaining games and won all of them.
 If they won exactly half of all the games they played,
 what is the value of N?
:
2(4 + n) = (15 + n) 
8 + 2n = 15 + n
2n - n = 15 - 8
n = 7 games
:
Check 
they won: 4 + 7 = 11 games
total games: 15 + 7 = 22 games</PRE>