What is the value of time, t, for the given values of distance,d, and rate r?

D=315mi, r=45mi/h

A. 7h
B. 7mi
C. 14174 h
D. 14174 mi

Question

What is the value of time, t, for the given values of distance,d, and rate r?

D=315mi, r=45mi/h

A. 7h
B. 7mi
C. 14174 h
D. 14174 mi

anonymous · Answer

@shadow13 @gabby_2624

mathstudent55 · Answer

$rate~of~speed = \dfrac{distance}{time} $

shadow13 · Answer

its between b and c 
i believe

mathstudent55 · Answer

$r = \dfrac{d}{t} $

$t = \dfrac{d}{r} $

mathstudent55 · Answer

The question is what is the time.
The 4 choices have units of miles or hours.
A time must be in hours, not miles, so the only possible answers are A. and C.
Use the equation above to find out which one is correct.

mathstudent55 · Answer

time = distance divided by rate

anonymous · Answer

@mathstudent55 so i think that the answer would be A

shadow13 · Answer

its equals 7 h so yes u ar crecet

anonymous · Answer

ok thanks @shadow13

shadow13 · Answer

welcome and this is how i got it

Okay so you are traveling at 45 miles an hour and covering 315 miles.  Let's divide 315 by 45 to see how many hours we spent.

315/45=7
  You spent 7 hours

shadow13 · Answer

anything else my friend

mathstudent55 · Answer

Yes, the answer is 7 h.