JmSass217 wrote:

Hi all. This question was one I got wrong on a practice test (which unfortunately doesn't give or explain the correct solution). I think I must just be looking at it the wrong way though it doesn't seem like a difficult question at all. Another point of view and explanation would be appreciated. Thanks!

In May Mrs. Lee's earnings were 60% of the Lee family's total income. (I wrote down 0.6x) In June Mrs. Lee earned 20% more than in May. ((1.2)(0.6x) maybe this is where I went wrong?) If the rest of the family's income was the same in both months, then what percent of the Lee family's total income did Mrs. Lee earn in June?

64% - 68% - 72% - 76% - 80%

My answer was 72% because (1.2(0.6x)) = .72x But I'm guessing now that I wrote it out wrong?

The only thing you did wrong is that while calculating Lee's new share you considered the same base i.e. x

Lee families income (May) = x

Lee's share in that (60%) = 0.6x

Lees' income in june = 0.72x

Lee families income (June) = 1.12x

Lee's new share = 64.28%

Or solve it with simple values

Lee families income (May) = 100

Lee's share in that (60%) = 60

Lees' income in june = 72

Lee families income (June) = 112

Lee's new share = 64.28%

_________________

Be the coolest guy in the MBA Forum - Be a threadmaster!

Have a blog? Feature it on GMAT Club!

All MBA Resources All 'Sticky' Topics at one place

Please share your profiles for this application season: 2015 Profiles w/ Admit/Dings Results!

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Next Generation GMATClub CATS with Brilliant Analytics.