Question

If you have $10 with which to buy some pens for $1.75 each, how many can you buy?

Answer 1

10/75=5. So you can buy 5 with ten dollars

Answer 2

You can buy 5 pens.

10/1.75 = 5.714, but you can’t buy 7 tenths of a pen. So you have to round down to 5.