A company makes 110 bags.

Question

A company makes 110 bags.
30 of the bags have buttons but no zips.
23 of the bags have zips but no buttons.
23 of the bags have neither zips nor buttons.
How many bags have zips on them?

Answer 1

30 + 23 + 23 = 76

I think it's safe to assume that the rest of the bags have zips AND buttons on them, so lets subtract to see how many bags of this type there are:

110 - 76 = 34

 

Now just add the number of bags that have only zips and the number of bags that have both zips and buttons on them to get your final answer.