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GMAT pre Question 2

Expert replies
Source: — Problem Solving |

counting fines for 4 days is faster...

by kapsii » Sat Apr 04, 2009 11:02 am
fine for the first day:- $ 0.10

fine for the second day can be :- $ (0.10 + 0.30) or $ 0.10 * 2 => $ 0.20
as the question tells us that the fine will be the one which is the lesser of two.
thus after second day fine is: $ 0.20

fine at the end of 3rd day will be :- $(0.20 + 0.30) or $(0.20 * 2) => 0.40

fine at the end of the fourth day :- $(0.40 + 0.30) or $(0.40 * 2) i.e. $0.70 or $0.80

Thus the answer is $0.70 as the fine is always the lower amount.
Cheers,
Dubes
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by subhasis8877 » Sat Apr 04, 2009 8:36 pm
Great explanation . Thanks
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