Setting up a math problem

Question

The average adult heart pumps about
of blood at 84.0 mL/s of blood at 72
beats per minute. Suppose you need to calculate how long it would take the average heart to circulate 6500.0 mL
of blood.

Set the math up. But don't do any of it. Just leave your answer as a math expression.
Also, be sure your answer includes all the correct unit symbols.

Answer 1

You can use dimensional analysis, where you set up the equation so that the appropriate units cancel, leaving you with the units you want, i.e. seconds, minutes, hours, etc. in this case.

 

6500.0 mls x 1 second/84 mls = seconds 

 

NOTE:  the value of 72 beats per minute does not enter into the calculations.