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

Answer:

time in which remaining half battery will last=4hrs

Step-by-step 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,

$\frac{1}{2}=\frac{t}{8 }$

Therefore,

$t=\frac{8}{2}$

t=4hrs

time in which remaining half battery will last=4hrs