Question

You are leaving for a concert that starts in 4 hours and is 244 miles from your house. What average speed (in miles per hour) do you need to travel in order to arrive at the concert on time? miles per hour School starts in 43 minutes and you live 15 miles from school. What average speed (in miles per hour) do you need to travel in order to arrive at school on time? (Hint: remember that there are 60 minutes in an hour, and the question asks for the time values to be in the form of hours.) miles per hour

Answer 1

First question : 61 miles per hour

Second question : 21 miles per hour

Explanation:

Since,

`Speed=(Distance)/(Time)`

First question :

Distance = 244 miles,

Time = 4 hours,

So speed =
`(244)/(4)` = 61 miles per hour,

Second question :

Distance = 15 miles,

Time = 43 minutes =
`(43)/(60)` hours ( ∵ 1 hour = 60 minutes )

So, speed =
`(15)/(43/60)` =
`(900)/(43)` = 20.930232 ≈ 21 miles per hour