Question

How many 1 1/2-inch binders will fit on a shelf that is 30 inches long?

Answer 1

the answer is 20 unless you can stack some binders on top

Answer 2

How many 1 1/2-inch binders will fit on a shelf that is 30 inches long?

The answer to you question would be 20. All you really have to do is divide 30 by 1 1/2 inches.

Hope this helped!!