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 $12\frac{miles}{hr}$ to reach her goal.

Step-by-step 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:

⇒ $\frac{Distance}{Time}$

⇒ $\frac{10miles}{50min}$

⇒ $10miles(\frac{1}{50min})$    

⇒ $10miles(\frac{1}{50\frac{1}{60}hr})$              {  $1 min = \frac{1}{60}hr$ }

⇒ $10miles(\frac{60}{50hr})$

⇒ $10(1.2)\frac{miles}{hr}$

⇒ $12\frac{miles}{hr}$

Therefore , Anna runs at a rate of $12\frac{miles}{hr}$ to reach her goal.