A temperature scale has a lower fixed point of 40mm and a upper fixed point of 200mm. What is the reading on this scale when a thermometer reads 60oC?

A temperature scale has a lower fixed point of 40mm and a upper fixed point of 200mm. What is the reading on this scale when a thermometer reads 60oC?

Answer Details

200mm ..... 100oC

Xmm ..... 60oC

400mm ..... 0oC

$\frac{x-40}{200-40}$ = $\frac{60-0}{100-0}$

X = 136mm