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The temperature has been rising X degrees per day for X

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The temperature has been rising X degrees per day for X [#permalink] New post 23 Oct 2005, 18:28
The temperature has been rising X degrees per day for X days. X days ago it was 15 degrees. Today it is 51 degrees. How much has the temperature been rising each day?
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 [#permalink] New post 23 Oct 2005, 18:43
Temperature raises x degress for x days. Hence the total rise is x * x.

Initial temp is 15 and final temp is 51. The temp raised is 51 - 15 = 36.

x * x = 36. Hence x = 6.
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Re: Temperature [#permalink] New post 23 Oct 2005, 18:54
x(x) = 51-15
x^2=36
so, x = 6 only (because days cannot be in negative, so -6 is not applicable.)
Re: Temperature   [#permalink] 23 Oct 2005, 18:54
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The temperature has been rising X degrees per day for X

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