Answer:
A)66 B)27.273%
Step-by-step explanation:
Given
Number of pizzas sold yesterday ,m=55
20% increase in pizzas sold from yesterday will get the employee a bonus
So number of pizzas to be sold today for the employee to get a promotion
[tex]=m+m\times\frac{20}{100} \\=m+m\times\frac{1}{5} \\=\frac{6}{5} m\\=\frac{6}{5} \times 55\\=6\times 11\\=66[/tex]
Therefore 66 pizzas need to be sold today for the employee to get a bonus
if the number of pizzas sold today, n=40
⇒ Change= n-m= 40-55= -15
Negative sign indicates decrease in pizzas sold
Percentage change[tex]=\frac{15}{55} \times100=27.272727.....[/tex]
                    =27.273%
