Algebra equations help?

Question

After making a trip of 126 miles, a person found that the trip would have taken one hour less time by increasing the speed by 8mph. What was the actual speed? So far I have this from the teacher.
126/r = 1+ (126/r+8)

Please show me how you get your answer

Answer 1

what is the distance ratio.

126 and 126 for both trips.

What is the velocity ratio.

V mph and (V + 8) mph

what is the ratio of time.

T hour (T - 1) hour.

Ratio of velocity times T is
V times T = (V+8) times (T-1)

There are 2 variables but 1 given equation...you cannot solve for variables with any fewer equations than variables.

HOwever you also know. the ratio of distance and speed), which is what your teacher gave you.

126 miles / V = 126/(V+8) + 1 ..... The units for this equation is time but thats just something for you to note...Dinstance over velocity is time. Solve for V.

Im not doing the problem out because its not easy calculating this this in my head. HOwever, find V equals to something, plug that into the first equation, you can solve for T (time).

Once you find T, plug it int 126/T and 126/ (T+8) + 1

GL.

Answer 2

I already anwered this for you.