Question

Anna wants to run 10-mile race in under 50 minutes. What rate, miles per hour, must she maintain to reach her goal.

Answer 1

Anna runs at a rate of
`12(miles)/(hr)` to reach her goal.

Explanation:

Here we have , Anna wants to run 10-mile race in under 50 minutes. We need to find What rate, miles per hour, must she maintain to reach her goal. Let's find out:

Anna wants to run 10-mile race in under 50 minutes , i.e. she runs at a rate of:

⇒
`(Distance)/(Time)`

⇒
`(10miles)/(50min)`

⇒
`10miles((1)/(50min))`

⇒
`10miles((1)/(50(1)/(60)hr))` {
`1 min = (1)/(60)hr` }

⇒
`10miles((60)/(50hr))`

⇒
`10(1.2)(miles)/(hr)`

⇒
`12(miles)/(hr)`

Therefore , Anna runs at a rate of
`12(miles)/(hr)` to reach her goal.