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?
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.
A simple ratio would do it
15 miles/150 minutes = 2 miles/x minutes
cross-multiply
15x = 300
x = 20
To find out how many minutes it will take Andrea to run 2 miles, we need to first calculate her average speed in miles per hour. We know that she covers 15 miles in 2.5 hours.
Average speed = Total distance / Total time
So, Andrea's average speed = 15 miles / 2.5 hours
Now, let's calculate her average speed:
Average speed = 6 miles per hour
Next, we need to find out how long it will take her to run 2 miles at this speed. We can use the formula:
Time = Distance / Speed
Substituting the given values:
Time = 2 miles / 6 miles per hour
Now, let's calculate the time:
Time = 0.3333... hours
To convert this time from hours to minutes, we multiply the value by 60 (since there are 60 minutes in an hour).
Time in minutes = 0.3333... hours * 60 minutes per hour
Now, let's calculate the time in minutes:
Time in minutes = 20 minutes
Therefore, it will take Andrea approximately 20 minutes to run 2 miles at a constant speed.