You are one mile from the railroad station, and your train is due to leave in ten minutes. You have been walking at a steady rat

Question

3 years ago

10

You are one mile from the railroad station, and your train is due to leave in ten minutes. You have been walking at a steady rat

e of 3 mph, and you can run at 8 mph if you have to. For how many more minutes can you continue walking, until it becomes necessary for you to run the rest of the way to the station?

Mathematics

1 answer:

dybincka [34] · Answer 1 · 2022-01-12T15:17:36+03:00

dybincka [34]3 years ago

8 0

Answer:

x=1.818minutes

Step-by-step explanation:

3/60 miles per minute for walk

8/60 miles per minute for run

0.05x + 0.1333y=1

x+y=10

x=y-10

0.05(y-10) + 0.133333y = 1

0.05y-0.5+0.133333y=1

0.18333y=1.5

y=8.18minutes

x=10-8.18

x=1.818minutes