Question

A groery store sells a 6-pack of bottled water for $3.79 a 9-pack for $4.50 and a 12-pack for $6.89.Which package costs the least per bottle? Explain your reasoning.

Answer 1

The 9-pack is the least per bottle. This is because...

3.79/6 = $0.63 per 1 bottle    (6 pack)

4.50/9 = $0.50 per 1 bottle   (9 pack)

6.89/12 = $0.57 per 1 bottls  (12 pack)