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smclean23: Master | Next Rank: 500 Posts; Posts: 172; Joined: Mon Jun 23, 2008 12:00 pm; Thanked: 3 times; Followed by:1 members

by smclean23 » Wed Jul 16, 2008 3:49 pm

If x +y = 5 and xy=6, then 1/X + 1/Y
(A) 1/6
(B) 5/6
(C) 1/5
(D) 6/5
(E) 5

Source: Beat The GMAT — Problem Solving | Wed Jul 16, 2008 3:49 pm

TRANGZON: Junior | Next Rank: 30 Posts; Posts: 22; Joined: Mon Apr 14, 2008 3:36 pm; Location: California; Thanked: 1 times

by TRANGZON » Wed Jul 16, 2008 4:28 pm

x +y = 5 and xy=6 --> x = 2, y = 3 or x = 3, y = 2

1/X + 1/Y = 1/2 + 1/3 = 5/6 --> B

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