quickestlearner8562
29.01.2020 •
Mathematics
Vera is using her phone. its battery lifw is down to 2/5 and it drains another 1/9 fraction every hour. how long will her battery last?
2/45
3 3/5
3/5
3
Solved
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Ответ:
Battery is down currently = 2/5
Battery drains at the rate of 1/9 every hour.
Remaining battery life of Vera = 1 -2/5 = 3/5
Let y we the number of hours battery will last.
So, 1/9 y = 3/5
y = 27/5
y = 5 + 2/5 hours
y = 5 hrs and 24 mins
So battery will last another 5 hrs and 24 mins.
hope this helps:)
Ответ:
You just do 3-7 and get -4