Answer:
Step-by-step explanation:
To solve this you have to find like terms for the fractions:
2/5 => 18/45 (amount of power remaining)
1/9 ==> 5/45 (power consumption per hour)
If we divide 18 by 5 (the amount of power we have left divided by the amount of power consumption we use per hours), we find that the battery will last 3.6 more hours.
I hope this helps!
Answer:
The battery last is for 5.4 hours or 5 hours and 24 minutes.
Step-by-step explanation:
Given : Vera is using her phone. Its battery life is down to [tex]\frac{2}{5}[/tex] and it drains another [tex]\frac{1}{9}[/tex] every hour.
To find : How many hours will her battery last?
Solution :
Let the total battery be '1'.
Battery life is down to [tex]\frac{2}{5}[/tex]
Remaining battery life is [tex]1-\frac{2}{5}=\frac{3}{5}[/tex]
Battery drains at the rate of [tex]\frac{1}{9}[/tex] every hour.
Let 'x' be the number of hours battery will last.
So, [tex]\frac{1}{9}x=\frac{3}{5}[/tex]
[tex]x=\frac{3\times 9}{5}[/tex]
[tex]x=\frac{27}{5}[/tex]
[tex]x=5.4[/tex]
Therefore, The battery last is for 5.4 hours or 5 hours and 24 minutes.
