Question

Vera is using her phone. It's battery life is down to 1/2 and it drains another 1/8 every hour. How many hours will her battery last?

Answer 1

the battery will last 4 hours

Answer 2

time in which remaining half battery will last=4hrs

Explanation:

Vera's battery is remaining to half

and it is draining at the rate of 1/8 in every hour

Let t be the time in which remaining half battery will last

therefore,

`(1)/(2)=(t)/(8 )`

Therefore,

`t=(8)/(2)`

t=4hrs

time in which remaining half battery will last=4hrs