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Fish Math: Temperature difference in water change :-)
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What's the maximum amount of water she can safely change each time?
She can't change any of the water safely
4%
 4%  [ 1 ]
She can change 10% safely
12%
 12%  [ 3 ]
She can change 20% safely
68%
 68%  [ 17 ]
She can change 30% safely
0%
 0%  [ 0 ]
She can change 40% safely
0%
 0%  [ 0 ]
Can't answer, you didn't give the tank volume
16%
 16%  [ 4 ]
Total Votes : 25

Author Message
Marcos Avila
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Joined: 05 Feb 2003
Location: Santo Andre (Brazil)

PostPosted: 2003.08.08(Fri)11:49    Post subject: Fish Math: Temperature difference in water change :-) Reply with quote

Ooooo...I loved Cyradia's idea of little educational math problems applied to fishkeeping. Here's a simple one just to see how math enabled people are here Smile

Cyradia has a wonderful Angelfish tank that she keeps at 28
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Last edited by Marcos Avila on 2003.08.08(Fri)12:23; edited 1 time in total
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Marcos Avila
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Joined: 05 Feb 2003
Location: Santo Andre (Brazil)

PostPosted: 2003.08.10(Sun)10:33    Post subject: Reply with quote

Great! 20 people have answered at the time of this post and 13 got it right...congratulations! Smile

The formal solution is given below, but in the specific case of our problem, those who are more familiar with mathematics don't even need to resort to solving formulas. They notice that the difference in temperatures between the old and new water is 28-23=5
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