Answer :

Answer:

the decrease rate is 25%

Step-by-step explanation:

Percents are represented by the following expression:

[tex]\text{ Total }\cdot\text{ }\frac{\text{ percent}}{100}=\text{ Equivalent number to the percent}[/tex]

Substitute the total, 320, and the equivalent number is 240. Solve for the percent:

[tex]\begin{gathered} 320\cdot\frac{\text{percent}}{100}=240 \\ \text{ percent=}\frac{240\cdot100}{320} \\ \text{ percent= 75\%} \end{gathered}[/tex]

240 represents 75%. Hence, the decrease rate is 25%

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