an airplane travels a120 mile in 15 minutes.what is its speed in miles per hour
You could use a proportion.
120/15 = x/60
Cross multiply and solve for x.
To find the speed of the airplane in miles per hour, we can use the formula:
Speed = Distance / Time
In this case, the distance traveled by the airplane is 120 miles, and the time taken is 15 minutes. However, we need to convert the time from minutes to hours before using the formula.
Since there are 60 minutes in an hour, we can divide the time (15 minutes) by 60 to obtain the time in hours:
15 minutes / 60 = 0.25 hours
Now we can substitute the values into the formula:
Speed = 120 miles / 0.25 hours
Calculating this equation will give us the speed of the airplane in miles per hour.