She is paying $0.6 for one pound of dried food. Hope it help!
I think this is more of an opinion question. What someone could solve mentally may not be the same as someone else's.If it were my worksheet, I'd circle all of them but it may be different for you.
At your level, I'd probably circle:
54 - 10
93 - 20
and 39 - 2
I’m sorry I usually drink water you can lose a lot of water while doing that . Try to not a lot maybe some crackers
