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by Anju@Gurome » Fri Mar 15, 2013 9:04 am
AIM TO CRACK GMAT wrote:A professional gambler has won 40% of his 25 poker games for he week so far. If, all of a sudden his luck changes and he begins winning 80% of the time, How many more games he must play to end up winning 60% of all his games for the week?
Easiest way to solve this problem is to note that 60% is exactly the midpoint of 40% and 80%.
Hence, he must play the same number of games he has already played, i.e. 25 games.
Anju Agarwal
Quant Expert, Gurome

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