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A professional gambler has won 40% of his 25 poker games for
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06 Jul 2020, 06:31
06 Jul 2020, 06:31
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Question Stats:
75% (02:22) correct
25% (00:44) wrong based on 16 sessions
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A professional gambler has won 40% of his 25 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?
A. 20
B. 25
C. 30
D. 35
E. 40
A. 20
B. 25
C. 30
D. 35
E. 40
Re: A professional gambler has won 40% of his 25 poker games for
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06 Jul 2020, 06:32
06 Jul 2020, 06:32
By allegation method I got 1:1 but I dont know how to interpret this answer i.e. 1:1 as 25 games.
Re: A professional gambler has won 40% of his 25 poker games for
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Updated on: 06 Jul 2020, 22:45
Updated on: 06 Jul 2020, 22:45
1
Farina wrote:
By allegation method I got 1:1 but I dont know how to interpret this answer i.e. 1:1 as 25 games.
If you get 1:1 this means that the number is same, and thus, he must play same number of games.
40 80
60
20 20
Which is 1:1. If he has won 40% of his 25 games, he must play another 25 games, during which he wins 80%.
To confirm this, 40% of 25 = 10 and when he plays another 25 games, he won 80% of times, hence he won 20 games.
Thus, out of 50 games, he won 30 games.
