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## anonymous one year ago Traveling at 45 miles per hour, how many minutes, rounded to the nearest whole number, does it take to drive 240 miles from Orlando to Miami?

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1. anonymous

How many miles do you travel in an hour?

2. anonymous

45

3. Kash_TheSmartGuy

180 mins or 3 hours

4. anonymous

What do you mean?

5. Kash_TheSmartGuy

It will take him 180 mins to go from Miami to Orlando

6. anonymous

No not correct

7. anonymous

The answer choices dont have 180 minutes

8. anonymous

I need help working the problem out.

9. anonymous

If you can travel 45 miles in one hour how many hours will it take you to go 240 miles?

10. anonymous

45 miles in one hour...90 miles in 2 hours....135 miles in 3 hours....etc....etc...

11. anonymous

5

12. anonymous

or.....divide 45 into 240 what do you get?

13. anonymous

45 into 240= 0.1875

14. mathstudent55

Here is the formula for speed: $$speed = \dfrac{distance}{time}$$ we can abbreviate is as: $$s = \dfrac{d}{t}$$ Your question is how many minutes it takes, so you are looking for time. We can solve our equation for t, time. $$s = \dfrac{d}{t}$$ $$st = d$$ $$t = \dfrac{d}{s}$$ The time is the distance divided by the speed. Now plug in the known amounts your problem gives you. $$t = \dfrac{d}{s}$$ $$t = \dfrac{240~miles}{45~mph}$$ $$t = 5.3333... ~hours$$ Now you need to convert from hours to minutes. An hour is 60 minutes. Since an hour is larger than a minute, in the same amount of time there are more minutes than hours. When you go from hours to minutes, the number will become larger. That means you multiply hours by 60 to get minutes. $$5.333... ~hours \times 60 ~\dfrac{minutes}{hour} = 320~minutes$$

15. anonymous

Thank you once again!

16. mathstudent55

You're welcome.

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