The answer would be 226.2442.
Answer:
Number of large boxes: 55
Number of small boxes:65
Step-by-step explanation:
Let be "l" the number of large boxes and "s" the number of small boxes.
Set up a system of equations:

Use the methof of elimination. Mulitply the first equation by -60 and add both equations. Then solve for "s":

Substitute s=65 into any of the original equations and solve for "l":

Answer:
45 copies per minute
Look at drawing for an explanation
28 is the LCM of 4 and 7 as 4*7 = 28