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# In may, mrs. Lee earnings were 60 percent of lee family's

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Intern
Joined: 05 Aug 2006
Posts: 22
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In may, mrs. Lee earnings were 60 percent of lee family's [#permalink]  05 Aug 2006, 14:36
In may, mrs. Lee earnings were 60 percent of lee family's total income. In June Mrs. Lee earned 20 percent more in May. If rest of the family's income was same both months, then in June, Mrs. Lee's earnings were approximately what percent of Lee family's total income?

a. 64%
b. 68%
c. 72%
d. 76%
e. 80%
Senior Manager
Joined: 14 Jul 2005
Posts: 402
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A 64%

Assume total income = 100 hence In may Lee made = 60, family made=40
The next month her income = 1.2(60) = 72 and family made same i.e. 40

Hence answer is 72/112 = 64%
Senior Manager
Joined: 21 Jun 2006
Posts: 287
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64%

It's a simple question of calculating the right percentages.
Assume $100 as the total family income initially - Lee's is$60
With 20% increase, Lee earns $72 and if rest of family is same, the total family income is$112
Intern
Joined: 05 Aug 2006
Posts: 22
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How do you get the 112?
CEO
Joined: 20 Nov 2005
Posts: 2910
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
Followers: 19

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flowers24 wrote:
How do you get the 112?

May:
Total = t
Lee's = 0.6t

June:
Increase in Lee's = 0.6 * 0.2 t = 0.12 t
Lee's total = 0.72t
Family's total = t + 0.12t

Answer = 72/112 = approx 0.64 i.e A
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

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