A gambler has won 40% of his 20 poker games for the week so far. If, all of a sudden, his luck changes and he begins winning 80% of the time, how many more games must he play to end up winning 60% of all his games for the week?	Choose the correct choice from the following answers:
A) 20
B) 25
C) 30
D) 35
E) 40
Let x be the number of additional games the gambler needs to play.   0.4(20) + 0.8x = 0.6(x+20)   0.2x = 4   x = 20   The answer is 20.
<result>A</result>
A gambler has won 40% of his 20 poker games for the week so far. If, all of a sudden, his luck changes and he begins winning 80% of the time, how many more games must he play to end up winning 60% of all his games for the week?