You want to put 520 quarters in coin wrappers. you need one wrapper for every $10 in quarters. write an equation you can use to find how many wrappers you need

40c=520
This is the proper equation because there are 40 quarters in $10. Thus, if we could only fit $10 worth of quarters in each wrapper, we can only fit 40quarters in each wrapper. C represents the amount of wrappers we will need.

Hope this helps!