Loren made 20 ounces of a snack mix that was 2/5 peanuts, 25% raisins, and 4 ounces of chocolate chips. the rest was granola. how many ounces of granola were in loren’s snack mix?

20 oz snack mix

has 25% raisons.
25% is 1/4 of the snack mix.
20 * 1/4 = 5 oz raisons

2/5 is peanuts.
20 * 2/5 = 8 oz peanuts

4 oz are chocolate chips.

The rest is granola.
So add up what's in it to see what's left.

  5 oz raisons
  8 oz peanuts
+4 oz chocolate

 17 oz raisons/peanuts/chocolate

then there are 3 oz that must be granola
( 20 sanck mix - 17 oz others tuff = 3 oz )