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 May 5th, 2017, 06:40 PM #1 Senior Member     Joined: Nov 2010 From: Indonesia Posts: 1,766 Thanks: 121 Math Focus: Trigonometry and Logarithm {ASK} About Hot and Cold What is 4 times hotter than -4 degrees Celsius? A. -16 degrees Celsius B. -1 degrees Celsius C. 12 degrees Celsius D. 16 degrees Celsius Last edited by skipjack; May 6th, 2017 at 06:17 AM.
 May 5th, 2017, 06:54 PM #2 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 11,655 Thanks: 740 Obviously A. Is this a trick question Mr.Fly?
 May 5th, 2017, 07:03 PM #3 Senior Member     Joined: Nov 2010 From: Indonesia Posts: 1,766 Thanks: 121 Math Focus: Trigonometry and Logarithm I am tricked by my own question. I thought I would just need to multiply by 4, but isn't -16 degrees colder than -4 degrees?
 May 5th, 2017, 07:08 PM #4 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 11,655 Thanks: 740 ....-16 -12 -8 -4 0 4 8 12 16......>getting hotter! No thermometers in Indonesia?
 May 5th, 2017, 07:13 PM #5 Math Team   Joined: Dec 2013 From: Colombia Posts: 7,142 Thanks: 2382 Math Focus: Mainly analysis and algebra 4 Celsius = 277.15 Kelvin. So four times hotter is 1108.6 Kelvin = 835.45 Celsius. Thanks from romsek
May 5th, 2017, 07:19 PM   #6
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Quote:
 Originally Posted by v8archie 4 Celsius = 277.15 Kelvin. So four times hotter is 1108.6 Kelvin = 835.45 Celsius.
and 803.45 for -4 degC

 May 5th, 2017, 07:24 PM #7 Math Team   Joined: Dec 2013 From: Colombia Posts: 7,142 Thanks: 2382 Math Focus: Mainly analysis and algebra Oh yeah.
May 5th, 2017, 07:25 PM   #8
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Quote:
 Originally Posted by romsek and 803.45 for -4 degC
That escalated quickly.

May 5th, 2017, 08:03 PM   #9
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 Originally Posted by Monox D. I-Fly That escalated quickly.
the thing is you could make some other temperature scale, just as valid, with smaller increments. Then "4 times" as hot would result in a smaller absolute temperature difference.

So the question isn't really meaningful.

 May 5th, 2017, 08:22 PM #10 Senior Member     Joined: Nov 2010 From: Indonesia Posts: 1,766 Thanks: 121 Math Focus: Trigonometry and Logarithm So the "true" answer is -1 degrees Celsius? Last edited by skipjack; May 6th, 2017 at 06:18 AM.

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