SOLUTION: How did the tempruature change? First it increased by 5%, and then it increased by 20%

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Question 1205411: How did the tempruature change?
First it increased by 5%, and then it increased by 20%

Answer by ikleyn(52777)   (Show Source): You can put this solution on YOUR website!
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How did the tempruature change?
First it increased by 5%, and then it increased by 20%
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Let T be the initial temperature.


Then after first increase the temperature becomes  T*(1+0.05) = 1.05T.


After the second increase, the temperature becomes 1.05T*(1+0.2)T = 1.05*1.2T = 1.26T.


The final increase is 26%, comparing to initial temperature.

Solved.

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If you want to see many other similar  (and different)  solved problems,  look into the lesson
    - Percentage problems on chains of discounts
in this site.



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