Question

act math practice examquestion 12/45marci learned that each 10% of charge on her cell phone gave her an hour and twenty minutes of use. while playing a game today on her phone, she noticed the charge drop from 81% to 67%. how long did marci play the game?assume that playing the game does not drain any extra battery.select one answera 24 minutesb $1\frac{1}{3}$ hoursc 2.4 hoursd 3 hours and 12 minutes

Explanation:

Step1: Calculate total battery drop

$81\% - 57\% = 24\%$

Step2: Find time per 1% battery drop

First convert 1 hour 20 minutes to minutes: $60 + 20 = 80$ minutes.
Time per 1%: $\frac{80}{10} = 8$ minutes

Step3: Calculate total play time

$24 \times 8 = 192$ minutes
Convert 192 minutes to hours/minutes: $192 \div 60 = 3$ hours with a remainder of 12 minutes.

Answer:

D. 3 hours and 12 minutes