The percentage changes of the following situations are required.
The answers are
B. 10% increase
D. 12% decrease
A. 20% increase
D. 8% decrease
B. Max’s percent was about 1.1% more than Sara’s.
The formula for percentage change is
[tex]\dfrac{\text{Final}-\text{Initial}}{\text{Initial}}\times 100[/tex]
If the sign of the change is negative it is a decrease.
If the sign of the change is positive it is an increase.
Final value = $44
Initial value = $40
The percentage change is
[tex]\dfrac{44-40}{40}\times 100=10\%[/tex]
Final value = 396
Initial value = 450
The percentage change is
[tex]\dfrac{396-450}{450}\times 100=-12\%[/tex]
Final value = 24
Initial value = 20
The percentage change is
[tex]\dfrac{24-20}{20}\times 100=20\%[/tex]
Final value = 138
Initial value = 150
The percentage change is
[tex]\dfrac{138-150}{150}\times 100=-8\%[/tex]
Sara
Final value = 94
Initial value = 86
The percentage change is
[tex]\dfrac{94-86}{86}\times 100=9.3\%[/tex]
Max
Final value = 85
Initial value = 77
The percentage change is
[tex]\dfrac{85-77}{77}\times 100=10.4\%[/tex]
Difference = [tex]10.4-9.3=1.1\%[/tex]
Learn more:
https://brainly.com/question/8011401?referrer=searchResults
