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math question on practice test.

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math question on practice test. [#permalink] New post 14 Aug 2008, 16:38
hello, I was just wandering if anyone could answer this question? Question, to meet a government requirement, a bottler must test 5% of its spring water and 10% of its sparkling water for purity. If a customer ordered 120 cases of spring water and 80 cases of sparkling water, what percent of all the cases must the bottler test before he can send it out? I got the answer 7.5% and not 8% like the answer key says. Thanks
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Re: math question on practice test. [#permalink] New post 14 Aug 2008, 20:02
I am getting the answer as 7% :(

5% of 120 = 6
10% of 80 = 8

14 of 200 = 7%



:( :(
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Re: math question on practice test. [#permalink] New post 18 Aug 2008, 06:47
Thanks for responding. Maybe this practice test was just plain wrong.
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Re: math question on practice test. [#permalink] New post 18 Aug 2008, 07:17
I'm with rahulgoyal1986 at 7%.
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Re: math question on practice test.   [#permalink] 18 Aug 2008, 07:17
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