Answer:
Yes, the average speed for the entire trip from A to C is equal to 
Step-by-step explanation:
The average speed of an object is defined as the distance traveled divided by the time elapsed. Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time. For the special case of straight line motion in the x direction, the average velocity takes the form:

If the beginning and ending velocities for the motion are known, and the acceleration is constant, the average velocity can also be expressed as:

We Know that:

Replacing the values:

Well it sounds like you are doing volume so it is length time winth time high so times all the fraction
21/36.
All you have to do is multiply numerators by numerators and denominators by denominators. Simplify if needed
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I don’t see an attachment for a diagram