Question

Vera is using her phone. Its battery life is down to \dfrac25

5
2
​ start fraction, 2, divided by, 5, end fraction , and it drains another \dfrac19
9
1
​ start fraction, 1, divided by, 9, end fraction every hour.
How many hours will her battery last?

Answer 1

3.6 hours

Explanation:

Answer 2

We are given that Vera's battery life is down to =
`(2)/(5)`.

Rate of it drain =
`(1)/(9)` per our.

In order to find the number of hours will her battery last, we need to divide
`(2)/(5)` by
`(1)/(9)`.

`(2)/(5)` ÷
`(1)/(9)`

Let us convert division sign in multiplication and flip the second fraction, we get

`(2)/(5) * (9)/(1)`

=
`(18)/(5)`

= 3.6

Therefore, her battery will last in 3.6 hours.