Question

Delicious donuts sells their donuts in different sizes

6 for $2.10
12 for $5.49
18 for $7.20
24 for $12.00

Which box is the better buy?

Answer 1

6 for $2.10
Because you can get two boxes (total of 12 donuts) for $4.20 instead of $5.49
Or three boxes (18 donuts) for $6.30 instead of $7.20
Or 4 boxes ( 24 donuts ) for $8.40 instead of $12