Rates, Miles per Hour

Question

Kent drives his Mazda 416 miles in the same time that it takes Dave to drive his Nissan 360 miles. If Kent averages 7 miles per hour faster than Dave, find their rates.

Answer 1

 

M = rate for Mazda

 

N = rate for Nissan

 

 

 

M = 416/t

 

N = 360/t

 

 

M = N + 7

 

 

Solve for t:

 

 

416/t = 360/t + 7

 

Once you find the value of t you substitute it on the rates M and N above