Brian ran a 5-kilometer race in 40 minutes. How far did he run in 18 minutes? Write your answer as a decimal and do not round.(1 point)
To find out how far Brian ran in 18 minutes, we can set up a proportion using the time and distance.
The proportion is:
5 kilometers / 40 minutes = X kilometers / 18 minutes
To solve for X, we can cross multiply and then divide:
40X = 5 * 18
40X = 90
Dividing both sides by 40, we get:
X = 90 / 40
Simplifying the fraction on the right, we get:
X = 2.25 kilometers
Therefore, Brian ran 2.25 kilometers in 18 minutes.
To find the distance Brian ran in 18 minutes, we can set up a proportion using the ratio of time to distance.
In this case, the ratio of Brian's time to the distance is 40 minutes to 5 kilometers.
Let's set up the proportion:
40 minutes / 5 kilometers = 18 minutes / x kilometers
To solve for x, we can cross multiply:
40 * x = 5 * 18
40x = 90
Now, divide both sides of the equation by 40:
x = 90 / 40
Simplifying the fraction, we get:
x = 9/4
So, Brian ran 9/4 kilometers in 18 minutes. As a decimal, this is equal to 2.25 kilometers.
To find out how far Brian ran in 18 minutes, we can set up a proportion using the information given.
Let's define the distance Brian ran in 18 minutes as x kilometers.
We know that Brian ran 5 kilometers in 40 minutes.
We can set up the following proportion:
5 kilometers / 40 minutes = x kilometers / 18 minutes
Now, we can cross-multiply and solve for x:
(5 kilometers) * (18 minutes) = (40 minutes) * (x kilometers)
90 kilometers = 40x
To find x, we divide both sides of the equation by 40:
90 kilometers / 40 = x
x = 2.25 kilometers
Therefore, Brian ran 2.25 kilometers in 18 minutes.