If you run at a speed of 10mph cover a distance of 25miles, how long have you been running?

Question

(hint: you will need to solve for the time you are running using the formula t=d/S)

Answer 1

The easy answer is t=d/s, so 2.5 hours, or 2 hours and 30 minutes.

But as Dennis said, you can not do it.  I can't imagine a normal person running at 10mph for 2 hours and 30 minutes.  Even marathon runners don't do this speed.  

Answer 2

2 1/2 hours    

Answer 3

Simply divide

25/10

and your answer is 2.5 hours.

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BTW, I am just wondering ... if you can give a hint as to what formula is to be used, then why can you not substitute the appropriate values yourself?

Answer 4

Long enough to need a ambulance.

Answer 5

The trick here is mph is miles per hour. The word "per" means divide. Knowing this you have speed S=D/T which means speed = miles / hour.  Of course your unknown is time which you derive by multiplying both sides by T then dividing both sides by S giving you the hint t=d/s.

just remenber "per" is divide

and by the way "of" means multiply (1/2 of 10) is the same as 1/2 x 10

Answer 6

t =d/S = 25miles/10mph = 2.5 hours

Answer 7

2.5 hours