Help with a word problem

Question

If it takes 17 workers 17 minutes to fully package 17 packages, how many minutes does it take 90 workers to fully package 180 packages? 

Answer 1

How many worker-minutes does it take to make 1 package?

We performed 17 * 17 worker minutes to make 17 packages

So to make 1 package divide both sides by 17

17*1 worker minutes makes one package

so to make 180 packages you need

180 *17 worker minutes.

You have 90 workers, so divide by 90

2 * 17 minutes = 34 minutes