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Post new topic   Reply to topic    4GMAT - Online GMAT Preparation Forum Index -> GMAT Problem Solving
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grkmurthy
Senior Consultant


Joined: 14 Oct 2007
Posts: 37
PostPosted: Fri Nov 30, 2007 5:51 pm    Post subject: Algebra Reply with quote
It takes 7 hours to fill a tank to 3/4 of its capacity. How much more time it will take to completely fill the tank?

(1) 2hr 20 mts
(2) 9 hr 20 mts
(3) 1 hr 45 mts
(4) 3 hr 30 mts
(5) 4 hr 15 mts
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ksvickram
Senior Consultant


Joined: 02 Jan 2008
Posts: 29
PostPosted: Mon Jan 07, 2008 6:25 pm    Post subject: Reply with quote
If 75% of the tank is filled in 7 hrs, then 100% of the tank will be filled in 9 hrs and 20 mins. Thus an additional of 2 hrs and 20 mins.
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