Boxes per hour: how many boxes per hour of each type did I stock?

[vex]

If I have two types of boxes (A and B) and each type takes a different amount of time to stock, how do I calculate how long each box type takes to stock if I know the total stocking time? Example I have 50 of box type A, and 300 of box type B, and it took 3 hours to stock all 350 boxes, how many boxes per hour of each type did I stock?

 

[tkhunny]

Rule of Thumb, if you don't know a quantity, give it a name so you can talk about it.

Question: What are the individual rates?

Answer: r = rate for box type A and s = rate for box type B.

Go!