Question

Olivia can walk 8 miles in the same amount of time she can bike 22 miles. She bikes 7 mph faster than she walks. Find her walking and biking speed.

Nick and scott leave opposite ends of a bike trail 13 miles apart and travel toward each other. Scott is traveling of their speeds if they meet after 30 minutes.

Answer 1

The equation describing mean velocity:

V=s/t, then

t=s/V and;

where V_w is a velocity of walkin Olivia, and V_b is a velocity of biking

moreover:

and if I put this into the first equation:

------------------------------------------------------------------------------------------

Equation describing the location of Nick:

and analogical for Scott:

if they have met:

and they have met after:

x(t=0.5h)=13mph*0.5h=7.5 miles

that all

best regards