# Simple temperature conversion problem

1. May 24, 2013

### coolbyte

1. The problem statement, all variables and given/known data

I know this sounds too easy, but somehow webassign refuses my answers

The temperature difference between the inside and the outside of a home on a cold winter day is 64°F.

(a) Express this difference on the Celsius scale.
160/9

(b) Express this difference on the Kelvin scale.
2617/9

2. Relevant equations

C=5(F-32)/9
K=C+273.15

3. The attempt at a solution

Simply using the equations I got
C=160/9 or 17.7777778
K=2617/9 or 290.77777778

I inputted them three times in three forms, what is wrong with my answers?

2. May 24, 2013

### haruspex

Your equations are for converting one temperature from one scale to another. What you are given is a temperature difference. Suppose it's T Deg F outside and T+64 inside, then try your equations on each and take the difference after conversion. What do you notice?

3. May 24, 2013

### coolbyte

Thank you very much haruspex, I should have not subtracted 32 from the given temperature difference.
The right answer should be (64)(5/9)= 35.6