Question

You are comparing the costs of buying bottles of water at the supermarket. Which of the following has the least cost per liter?

a) $0.75 for a 500 mL bottle
b) $1.20 for a 750 mL bottle
c) $2.00 for a 1.5 L bottle
d) $3.50 for a 2 L bottle

Answer 1

To find the cost per liter, convert the bottle sizes to liters and divide the cost by the volume. The bottle with the least cost per liter is c) $2.00 for a 1.5 L bottle.

Step-by-step explanation:

To find the cost per liter, we need to convert all the bottle sizes to liters and divide the cost by the volume.

a) $0.75 for a 500 mL bottle = $0.75/0.5 L = $1.50/L

b) $1.20 for a 750 mL bottle = $1.20/0.75 L = $1.60/L

c) $2.00 for a 1.5 L bottle = $2.00/1.5 L = $1.33/L

d) $3.50 for a 2 L bottle = $3.50/2 L = $1.75/L

Therefore, the bottle with the least cost per liter is c) $2.00 for a 1.5 L bottle.