At what temperature will the reading on a fahrenheit thermometer be exactly twice the reading on celsius ther?

Question

At what temperature will the reading on a fahrenheit thermometer be exactly twice the reading on celsius ther?

Answer 1

F = 9/5C + 32

if F = 2C

then 2C =9/5C + 32

or     .2C = 32

so       C = 160

and     F =  320

I think this is right

Answer 2

Conversion formula: C to F:

F = 9/5C + 32

Therefore:

If F = 2C, then:

2C = 9/5C + 32

2C - 9/5C = 32

2C - 1.8C = 32

0.2C = 32

C = 32/0.2

C = 320/2 = 160

Therefore; at C = 160, F = 9/5*(160) + 32

= 9*(32) + 32 = 288 + 32 = 320F

160C =320F

Answer: At 320F = 160C

Thanks for noting the "typo".

Answer 3

Both Andy and Phoenix are correct.

160C=320F.

Phoenix gave a more detailed step by step explanation on the maths.

His only mistake was a 'typo' at the end.

Answer: At 360F = 160C should have read

Answer: At 320F = 160C

Easily done error and I would  not mark him down on the error since he had already came up with the correct answer.

For that I would give both an 'A' grade on there answers.