How much does it take to go 400 miles?
A car goes 900 miles in 16 hours how long does it take to go 400 miles?
I would set it up like this
put miles on top and hours on bottom and set the two equal to each other
900 Miles = 400 miles
16 hours X hours
and cross multiply!
900 X = 16 (400)
Solve for X
To start off we need to figure out with the information given how fast this car is actually going and then we can apply that to the 400 miles.
So what we do is take the 900 miles it traveled and divide it by 16 hours. This gives us the amount of miles it traveled every hour, in other words we get the miles per hour.
Now we just divide the 400 by the 56.25mph to get the amount of time it takes to travel that distance:
400mi/56.25mph=7.11 hours. Answer. (The miles unit cancels and what's left is the hours)
Hope this helps!
This is a proportion problem. Set up the proportion so that miles/hours equals miles/hours
900/16 = 400/x 900 miles per 16 hours equals 400 miles per unknown number of hours
16x(900/16) = 16x(400/x) Cross multiply (multiply each fraction by both denominators)
900x = 6400 Simplify
900x/900 = 6400/900 Divide each side by 900
x = 64/9 Simplify the fraction
It will take about 7.11 hours or 7 hours and 7 minutes.