Anna runs at a rate of to reach her goal.
<u>Step-by-step explanation:</u>
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:
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Therefore , Anna runs at a rate of to reach her goal.