on each flight an airplane is filled with 10 quarts of oil. the airplane adds an additional 1/2qt of oil for each planned hour of flying. write a equation that can be used to determine the planned flying time (h) in hours for a airplane filled with 13qts of oil equation:
that airplane flies 3300 miles. what is the average speed in miles per hour of the airplane?

Question

on each flight an airplane is filled with 10 quarts of oil. the airplane adds an additional 1/2qt of oil for each planned hour of flying. write a equation that can be used to determine the planned flying time (h) in hours for a airplane filled with 13qts of oil equation: 
that airplane flies 3300 miles. what is the average speed in miles per hour of the airplane?

anonymous · Answer

please help!!

gw2011 · Answer

Let h=planned flying time in hours
Let t=total quarts of oil filled in the plane

Therefore, the equation can be set up as follows:

(1/2)(h)=t-10
          h=2(t-10)  This is the equation

Now substituting into the equation the known information you get:

h=2(13-10)
h=(2)(3)
h=6 hours

The average speed is calculated as follows:

3300 miles/6 hours=550 miles per hour