Question

the temperature dropped from 80°f to 64°f. what is the percent decrease?

Explanation:

Step1: Find the amount of decrease

$80 - 64=16$

Step2: Calculate percent - decrease formula

Percent decrease = $\frac{\text{Amount of decrease}}{\text{Original amount}}\times100\%$
Substitute the values: $\frac{16}{80}\times100\%$

Step3: Simplify the fraction and multiply by 100%

$\frac{16}{80}=0.2$, and $0.2\times100\% = 20\%$

Answer:

$20$