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?
- 33.3mm
- 36.0mm
- 96.0mm
-
136.0mm
The correct answer is: D
Explanation
200mm ..... 100oCXmm ..... 60oC
400mm ..... 0oC
\(\frac{x - 40}{200 - 40}\) = \(\frac{60 - 0}{100 - 0}\)
X = 136mm