The last week of the month a car dealership sold 12 cars. A new sales promotion came out at the first of the week of the next month and they sold 19 cars that week. what was the percent increase in sales from the last week of the previous month compared to the first week of the next month?

percentincrease=(19-12)/12 *100

To calculate the percent increase in sales, we need to find the difference between the two sales figures and then express that difference as a percentage of the original sales.

Step 1: Find the difference in sales between the last week of the previous month and the first week of the next month.
The last week of the previous month: 12 cars sold.
The first week of the next month: 19 cars sold.
Difference = 19 cars - 12 cars = 7 cars.

Step 2: Calculate the percentage increase.
Percentage increase = (Difference / Original sales) x 100%

Original sales = 12 cars, Difference = 7 cars.

Percentage increase = (7 cars / 12 cars) x 100%
Percentage increase = 0.583333 x 100% ≈ 58.33%

Therefore, the percent increase in sales from the last week of the previous month compared to the first week of the next month is approximately 58.33%.