Janine is considering buying a water filter and a reusable water bottle rather than buying bottled water. Will doing so save her money?
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• How much water does Janine drink in a day? She normally drinks 6 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 $3.59.
• 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?
o A faucet-mounted filter costs about $28 and includes one filter cartridge. Refill
filters cost about $33 for a 3-pack. The box says each filter will filter up to 100
gallons (378 liters)
- A water filter pitcher costs about $22 and includes one filter cartridge. Refill filters
cost about $20 for a 4-pack. The box says each filter lasts for 40 gallons or 4 months
o An under-sink filter costs $130 and includes one filter cartridge. Refill filters cost
about $60 each. The filter lasts for 500 gallons.
Which option is cheapest over one year (365 days)? Select an answer v
The cheapest option saves her $
over a year.