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by gmat740 » Tue Jun 16, 2009 6:13 am
In May Mr. Lee's earings were 60 percent of the Lee family's total income. In June Mr. Lee earned 20 percent more than in May. If the rest of the family's income was the same both months, then, in June, Mrs.Lee's earnings were approximately what percent of the Lee Family's total income?

[spoiler]
ANS : 64%[/spoiler]
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by ssmiles08 » Tue Jun 16, 2009 6:38 am
You can do this by picking numbers since you are getting the answer in % anyway.

Let T = total for may = 100

(.06*100) = $60: Lee made for the month of May.
$40 dollars is made from rest of the family.

now Lee's income rose by 20%: 1.2(60) = $72: Lee made for the month of june.

Since the family's income was the same for both the months: they made $40 again.

so 72/(72+40) = 9/14 ~ 64%
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