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crackgmat007: Legendary Member; Posts: 882; Joined: Fri Feb 20, 2009 2:57 pm; Thanked: 15 times; Followed by:1 members; GMAT Score:690

by crackgmat007 » Fri Oct 23, 2009 3:32 pm

Pls solve.

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Source: Beat The GMAT — Problem Solving | Fri Oct 23, 2009 3:32 pm

mridul_dave: Senior | Next Rank: 100 Posts; Posts: 41; Joined: Tue Oct 06, 2009 9:49 am; Thanked: 4 times

by mridul_dave » Fri Oct 23, 2009 4:44 pm

crackgmat007 wrote:Pls solve.

T/ST + S/ST = ( T + S )

Multiply Both sides by TS

( T + S) = ( S + T) TS

If ( S + T ) not equal to 0 then

1 = TS

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