Question

The temperature dropped from 80° to 70°F. what is the percentage drop in the temperature

Answer 1

Given data:

The initial temperature is T=80° F.

The final temperature is T'=70°F.

The expression for the percentage of temperature drop is,

`\Delta=(T-T^(\prime))/(T)*100`

Substitute the given values in the above expression.

`\begin{gathered} \Delta=(80^(\circ)F-70^(\circ)F)/(80^(\circ)F)*100 \\ =(0.125)*100 \\ =12.5 \end{gathered}`

Thus, the percentage drop is 12.5%, so third option is correct.