Janine is considering buying a water filter and a reusable bottle rather than buying bottled water. Will doing so save her money?

First, determine what information you need to answer this question, then click here to display that information (along with other info)

How much water does Janine drink in a day? She normally drinks bottles a day. each 16.9 ounces.

How much does a bottle of water cost? she buys 24-packs of 16.9 ounce bottles for $3.29

How much does a reusable water bottle cost? about $10

How long does a reusable water bottle last? basically forever (or until you lose it)

How much does a water filter cost? How much water will they filter?

- A faucet-mounted filter cost about $28 and includes one filter cartridge. Refill filters cost about $33 for 3-pack. The box says each filter swill filter up to 100 gallons (378 liters)

- A water filter pitcher costs about $2 and includes one filter cartridge. Refills cost about $20 for a 4-pack. The box says each filter last for 40 gallons or 4 months

- An under-sink filter cost $130 and includes one filter cartridge. Refill filters cost about $60 each. he filter lasts for 500 gallons.

Which option is cheapest over one year (365 days) ?

A. water bottles

B. Faucet-mount filter

C. Filter pitcher

D. Under-sink filter

The cheapest option saves her $_____ over a year.

Given your answer to the nearest cent. Pro-rate the costs of additional filters (so if you only use part of a filter, only count the corresponding fraction of the filter cost)