The entire cost of the car ($21,345) plus the $2,500 upgrade is $21,345 + $2,500 = $23,845.
How do you know find 7% of your total in part A? Show your proportion and work.
To find 7% of the total cost ($23,845), you can set up a proportion:
7/100 = x/$23,845
To solve for x, you can cross multiply:
7 * $23,845 = 100x
166,915 = 100x
Divide both sides by 100:
166,915/100 = x
x = $1,669.15
So, 7% of the total cost is $1,669.15.