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Smitae: Newbie | Next Rank: 10 Posts; Posts: 2; Joined: Mon Sep 08, 2008 9:59 pm

by Smitae » Mon Sep 08, 2008 10:03 pm

7a - 9 = 6a + 4
What is the value of a?

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Source: Beat The GMAT — Problem Solving | Mon Sep 08, 2008 10:03 pm

rabab: Master | Next Rank: 500 Posts; Posts: 132; Joined: Fri Sep 05, 2008 10:19 pm; Location: Bangladesh; Thanked: 1 times

by rabab » Mon Sep 08, 2008 10:41 pm

7a-9 = 6a +4
=> 7a-6a = 9+4
So, a=13.

are you sure you're stuck with this question?

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Smitae: Newbie | Next Rank: 10 Posts; Posts: 2; Joined: Mon Sep 08, 2008 9:59 pm

by Smitae » Tue Sep 09, 2008 1:57 am

I think this is the only way we can solve, but the model answer for this problem is 8, which seems to be wrong.

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