Question

Phoebe spends 2 hours training for an upcoming race. She runs full speed at 8 miles per hour
for the race distance; then she walks back to her starting point at 2 miles per hour. How long
does she spend walking? How long does she spend running?

Answer 1

Answer:

let the distance from where she started till where she reached be x miles.

speed of running = 8miles/hr

time = distance / speed

time taken to run = X / 8 -----(1)

speed of walking = 2 miles/hr

time taken to walk = x / 2 -----(2)

total time spent = 2 hrs

i.e.

x / 2 + x /8 = 2

4x +x /8 = 2

5 x = 16

x = 3.2 miles

time spent on walking = x /2

= 1.6 hr

= 96 minutes

time spent on running = x /8

= 0.4 hr

= 24 minutes

mark brainliest