Question

micah is preparing for a piano recital. he practices for 50 minutes on monday and 90 minutes on wednesday. how did the amount of time that micah spent practicing change from monday to wednesday? micah increased his practice time by 40 minutes. what is the percent increase in micahs practice time? an error has occurred. please enter a number.

Explanation:

Step1: Recall percent increase formula

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

Step2: Identify original and increase amounts

Original amount (Monday) is 50 minutes, increase amount is 40 minutes (from 50 to 90: 90 - 50 = 40).

Step3: Substitute into formula

$\text{Percent Increase} = \frac{40}{50} \times 100\%$.

Step4: Calculate the value

$\frac{40}{50} = 0.8$, then $0.8 \times 100\% = 80\%$.

Answer:

80%