Question

45 of the magnets in George's collection are flags. 12 of those flags are U.S. flags. What fraction of George's magnets are U.S. flags?

Answer 1

For this case, what you must do is perform the following division:
 N = (U.S. flags.) / (Total flags)
 We have then:
 N = 12/45
 Simplifying:
 N = 4/15
 Answer:
 The fraction of George's magnets are U.S. flags is:
 N = 4/15