Question

event | opening night ticket sales | closing night ticket sales | amount of change | percent increase
spring play | 90 | 99 | 9 | 10
chorus performance | 40 | 60 | 20 |
band concert | 100 | 110 | 10 |
what is the percent increase in ticket sales for the chorus performance?
%

Explanation:

Step1: Recall percent increase formula

The formula for percent increase is $\text{Percent Increase} = \frac{\text{Amount of Change}}{\text{Original Amount}} \times 100\%$.

Step2: Identify values for chorus

For Chorus Performance, Original Amount (Opening Night) is 40, Amount of Change is 20.

Step3: Calculate percent increase

Substitute into formula: $\frac{20}{40} \times 100\% = 0.5 \times 100\% = 50\%$.

Answer:

50