Question

george is a volunteer. his cell phone is at 20% battery. when his cell phone is at 100% it will last him 24 hours. george is going to work a 5 hour shift volunteering and needs his cell phone to work the entire time. george says he is good and doesn't need to charge his phone. is george's statement true or false?

Answer 1

To determine if George's statement is true or false, we need to calculate whether his cell phone's battery will last for the entire 5-hour shift.

If George's cell phone lasts 24 hours when it's fully charged (100% battery), we can calculate the battery life per hour:

Battery life per hour = 100% / 24 hours = 4.17% per hour.

Since George's cell phone is currently at 20% battery, we can calculate how long it will last:

Battery life remaining = 20% * Battery life per hour = 20% * 4.17% per hour = 0.83% per hour.

Now, let's calculate how long George's cell phone will last during the 5-hour shift:

Battery life for 5 hours = Battery life remaining * 5 hours = 0.83% per hour * 5 hours = 4.17%.

Since the battery life remaining for 5 hours is 4.17%, which is less than the battery required to last the entire shift, George's statement is false. He will need to charge his phone to ensure it lasts for the entire 5-hour shift.