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OG 10 Data sufficiency Question 24

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Source: — Data Sufficiency |
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by indiantiger » Thu Aug 05, 2010 4:38 pm
I think its a typo.
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by lunarpower » Fri Aug 06, 2010 3:51 am
you may want to check this problem.
it's clearly impossible to add two positive integers and get a fraction (like 75/100), so statement (2) has clearly been transcribed incorrectly.
that's such an obvious error that i don't think we'd see it even in the worst-quality materials ... so there's definitely no way that you'd see it on an official problem!

please check your sources and post back. thanks.
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by clock60 » Fri Aug 06, 2010 1:22 pm
manishankar wrote:If R and S are positive integers. R is what percent of S

(1) R=3/4 S

(2) R+S=75/100

I thought the answer was A, but OA is D.
Can someone explian this ???
hi manishankar
see again in the problem
(2) it is (R/S)=75/100, you mistook (/, division) with (+) substraction
with this correction the problem is solvable one
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by lunarpower » Sat Aug 07, 2010 3:42 am
clock60 wrote:
manishankar wrote:If R and S are positive integers. R is what percent of S

(1) R=3/4 S

(2) R+S=75/100

I thought the answer was A, but OA is D.
Can someone explian this ???
hi manishankar
see again in the problem
(2) it is (R/S)=75/100, you mistook (/, division) with (+) substraction
with this correction the problem is solvable one
ok, that makes a lot more sense. thanks for updating the problem.

with that new second statement, you can reduce to r/s = 3/4, which is the same as the first statement. therefore, each of the individual statements is sufficient.
Ron has been teaching various standardized tests for 20 years.

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