Janine is considering buying a water filter and a reusable water
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 info (along with other info).
Which option is cheapest over one year (365 days)? Select an answer
Water bottles faucet-mount filter filter pitcher under-sink
filter
The cheapest option saves her $ over a year.
Give 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) and pro-rate the
cost of the bottled water (so if you only use a part of a case,
only count the cost for the portion of the case used).
The faucet filter is cheapest to use at a rate of $21.24 per year.
The cheapest option saves her almost $172.82 per year .
The cheapest option saving = water bottle cost - faucet mount filter
= $ 194.06/year - $21.24 /year = $172.82 per year.
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