Question

sara is traveling home from a friends house. she drives 80 miles in 2 hours. if the total trip is 100 miles, how long will it take her to get home, assuming she travels at the same rate throughout her trip

Answer 1

it will be 80/2 and 0/10 you will have to multiply 10*80/2=4000

Answer 2

It will take 2.5 hours.

Explanation:

We know that,

`Speed = (Distance)/(Time)`

If distance is 80 miles and time taken is 2 hours,

Then,

`Speed = (80)/(2)=40\text{ miles per hour }`

Here sara is travelling with the constant speed which is 40 miles per hour,

If distance = 100 miles,

Hence, the time taken by her =
`(Distance)/(Speed)`

`=(100)/(40)=2.5\text{ hours}`