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# In US, betwwen 1950 and 1960, the number of households with

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In US, betwwen 1950 and 1960, the number of households with [#permalink]

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02 Oct 2009, 00:39
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In US, betwwen 1950 and 1960, the number of households with TVs increased 25%. During the same period, the total number of households increased 10%. What percentage of households had a TV in 1960?

1/ In 1950, exactly 2000 out of total 10000 households had TV.
2/ Between 1950 and 1960, the number of households without TVs increased from 8000 to 8500.
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02 Oct 2009, 00:52
I wrote a good expl. but the system of this site broken up (as I've seen at least 10 times before) and my post gone away.
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02 Oct 2009, 00:59
maliyeci wrote:
D

Yes, D is the one.

From 2: Say X is the total number of households in 1950, so the number of households with TV is: X-8000
In 1960, total number of households increased to 1.1X and the number of households with TV increased to 1.25(X-8000)
So 1.1X-1.25(X-8000)=8500; got X= 10,000.

Thanks.
Re: Percentage   [#permalink] 02 Oct 2009, 00:59
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