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GHong14: Master | Next Rank: 500 Posts; Posts: 155; Joined: Sat Oct 16, 2010 6:32 pm; Thanked: 3 times

by GHong14 » Mon Jan 10, 2011 2:43 pm

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Source: Beat The GMAT — Problem Solving | Mon Jan 10, 2011 2:43 pm

Night reader: Legendary Member; Posts: 1337; Joined: Sat Dec 27, 2008 6:29 pmFollowed by: 10 members; Thanked: 127 times

by Night reader » Mon Jan 10, 2011 3:18 pm

GHong14 wrote:

800-500 (20% ... $100)
.......300 (30% ... $ 90)
__________________
............................$190

190/800=19/80 approximately less than 20/80 (1/4) ~ 24%

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Anurag@Gurome: GMAT Instructor; Posts: 3835; Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members; Location: Milpitas, CA; Thanked: 1854 times; GMAT Score:770

by Anurag@Gurome » Mon Jan 10, 2011 9:52 pm

Total sale = $800
Sale below $500 = $500 --> Commission = 20% 0f $500 = $100
Sale above $500 = $300 --> Commission = 30% 0f $300 = $90

Total commission = $(100 + 90) = $190

Required percentage = 100*(190/800) = 23.75 â‰ˆ 24

The correct answer is B.

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