Question

1. during a 90-minute school play, the main character was on stage 80% of the time. what amount of time in minutes was the main character on stage? a. 88.9 minutes b. 112.5 minutes c. 80 minutes d. 72 minutes

Explanation:

Step1: Convert percentage to decimal

To find 80% of 90 minutes, first convert 80% to a decimal. 80% is equivalent to $0.8$ (since $80\%=\frac{80}{100} = 0.8$).

Step2: Multiply by total time

Multiply this decimal by the total duration of the play (90 minutes). So we calculate $90\times0.8$.
$90\times0.8 = 72$.

Answer:

D. 72 minutes