Question

The temperature of bar harbor, Maine was \[ - {3^\circ }F\] .It then dropped during the night to be 4 times as cold. What was the temperature then?
A) \[{12^\circ }F\]
B) \[ - {12^\circ }F\]
C) \[{16^\circ }F\]
D) \[ - {16^\circ }F\]

Answer 1

Hint: Here we need to find the temperature which is 4 times the present temperature hence we will just multiply the current temperature by 4 to get the desired answer.

Complete step by step solution:
We are given that the present temperature of the harbor is \[ - {3^\circ }F\]
Also, it dropped 4 times the present temperature at night
Which implies the temperature then is 4 times the present temperature
Hence, multiplying the present temperature by 4 we get:
\[
  {\text{temperature then}} = 4\left( {{\text{present temperature}}} \right) \\
  {\text{temperature then}} = 4{\left( { - 3} \right)^\circ }F \\
  {\text{temperature then}} = - {12^\circ }F \\
 \]
Hence the required temperature is \[ - {12^\circ }F\]

Hence option B is the correct option.

Note:
As the atmosphere becomes cold, the temperature of the atmosphere decreases.
As the atmosphere becomes hot , the temperature of the atmosphere increases.