This problem should be (7/8)/( 1/4)=3.5. You can't count half a bag, so you can pack three bags at most.

This kind of problem is easy to be confused. I suggest you do some of these questions and look for them on some websites, such as onion math. There are many questions. Come on ~

Application problems are different from other math problems. He asked you to be realistic. Rounding is not enough, just like when you go shopping, you don't want to buy half a pack, do you? This is also the reason why such questions are easy to confuse people.