What is the best deal on packing boxes?

A) 5 packs for $8.00

B) 12 packs for $7.00

C) 24 packs for $10.00

D) 36 packs for $17.00

A would be 8/5 which is about 160 cents each, B would be 7/12 which is about 58 cents each, C would be 10/24 which is about 42 cents each, D would be 17/36 which is about 47 cents each. So C would be the best deal