Answer:
The number of units sold increased by [tex]\mathbf{11.2\%}[/tex]
Step-by-step explanation:
Vacuum dealer sold units in 2011 = 420
Vacuum dealer sold units in 2012 = 467
We need to find percent increase or decrease
Since, In 2012 units sold are greater than 2011, so there will be percent increase.
The formula used is: [tex]Percent\:Increase=\frac{New\:Value-Original\:Value}{Original\:Value}\times 100[/tex]
We have New Value (Units sold in 2012) = 467
Original Value (Units sold in 2011) = 420
Percent increase is:
[tex]Percent\:Increase=\frac{New\:Value-Original\:Value}{Original\:Value}\times 100\\Percent\:Increase=\frac{467-420}{420}\times 100\\Percent\:Increase=\frac{47}{420}\times 100\\Percent\:Increase=11.2\%[/tex]
So, The number of units sold increased by [tex]\mathbf{11.2\%}[/tex]
