2cereal comes in two different-sized boxes.
• box a costs $5.25 for 250 g.
• box b costs $4.50 for 375 g.
which box is cheaper per gram, and how much
cheaper per gram is it?
a box b, $0.009 per gram
| b box b, $0.75 per gram
c box a, $0.033 per gram
d box a, $35.71 per gram