Charging a Phone
My phone needs 5 hours to be charged fully. The battery of the phone wears out in 10 hours but in sleep mode, it wears out in 20 hours. Jimmy charge his phone from 0% battery for 3 hours, then he drove his car for 30 minutes to his friend's house. He stayed in his friends'is house for 2 hours. Then, he drove back home for 30 minutes. When he reached home he played a game on his phone for 1 hour. How much percentage of battery is there left?
Note: Submit the number only (not % sign) as your answer.
The answer is 35.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
Per hour he charged his phone will give him 20% Per hour he sleep his phone will use 5% Per hour he used his phone will use 10% He charged his phone for 3 hours, sleep his phone for 3 hours, and used his phone for an hour.
Therefore, 60%-15%-10%=35%