Runnign at a consant speed, Andrea covers 15 miles in 2 and half hours. At this speed, how many minutes will it take her to run 2 miles?

Answer 1

okay first thing you have to do is figure out how much he runs in 1 hour

you simply do that by divind 15/2.5
= she runs 6 miles per hour
now you have to figure out how much she runs in one minute because they ask for how many minutes it will take her

you do that by 6/60( 6 because that's the amount of miles per hour and 60 cuz that's how many minutes are in an hour)
=0.1

now u have figure out, how long will it take her to run 2 miles

you do that by dividing 2/0.1( 2 because we are figuring out for 2 miles and 0.1 because that's how long we have to figure out)

once u do 2/0.1, you should get 20

therefore it will take her 20 min to run 2 miles.

Answer 2

A simple ratio would do it

15 miles/150 minutes = 2 miles/x minutes
cross-multiply
15x = 300
x = 20