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## Homework Statement

On a Temperature scale, the ice point is 25.6°I and the steam point is 155°I. If the temperature reads 66.6°I what is the equivalent in °C?

## The Attempt at a Solution

25.6°I = 0°C

155°I = 100°C

1°I = 5/647 of the interval between boiling and freezing.

1C° = 647/500 I°

1I° = 500/647C°

66.6°I = 51.5°C

I arrive at this answer but i'm not convinced i've done this correctly. When changing from faranheit to celsius for example, I have to subtract the offset from zero...

So should my answer actually be 51.5 - 25.6 °C?

I'd really appreciate some help,

thanks!