doing so save her ments First, determine what information you need to answer this question, then click here to display that info (along with other info). - How much water does Sabrina drink in a day? She normally drinks 5 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 $3.09. - 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 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 - An under-sink filter costs $130 and includes one filter cartridge. Refill filters cost about $60 each. The filter lasts for 500 gallons. To determine which option is the cheapest, we need to make some preliminary calculations. How much water does she drink in a year? How many bottles is that, and how much would that many bottles cost? - She drinks gallons per year. - That amounts to bottles per year. - It would cost \$ to purchase that many bottles. The cost for bottles is the baseline price. How does this compare to the filter options? Which option is cheapest over one year ( 365 days)? The cheapest option saves her \$ over a year. Give your final answer to the nearest cent. Pro-rate the costs of additional filters (so if you only use part of a fitter, only count the corresponding fraction of the filter cost). Stuck? Click here for a detailed hint! - First, figure out how much water she drinks in a year. To compare to the filter options, you need to know the number of gallons per year. For a precise finat answer, do not round this vatue too much! - How many bottles is that and how much would that many cost? That is the baseline price. - For each filter option, determine the number of fitters needed, then the cost for the device plus any extra necessary replacement filters. For example, the faucet mounted filter costs $28 and will filter 100 gallons with the included fitter. To fitter up to 200 gallons, it would cost an extra $11 for another fitter. and so on. But per the instructions, filter cost should be pro-rated, so for example, if you need to filter 275 gallons total, assume you need 2.75 filters. Since one is provided, additional filters would then cost 1.75(11)=519.25. - Figure out the total cost. That is the cost for the reusable water bottle, plus the device cost, plus the doing so save her ments First, determine what information you need to answer this question, then click here to display that info (along with other info). - How much water does Sabrina drink in a day? She normally drinks 5 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 $3.09. - 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 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 - An under-sink filter costs $130 and includes one filter cartridge. Refill filters cost about $60 each. The filter lasts for 500 gallons. To determine which option is the cheapest, we need to make some preliminary calculations. How much water does she drink in a year? How many bottles is that, and how much would that many bottles cost? - She drinks gallons per year. - That amounts to bottles per year. - It would cost \$ to purchase that many bottles. The cost for bottles is the baseline price. How does this compare to the filter options? Which option is cheapest over one year ( 365 days)? The cheapest option saves her \$ over a year. Give your final answer to the nearest cent. Pro-rate the costs of additional filters (so if you only use part of a fitter, only count the corresponding fraction of the filter cost). Stuck? Click here for a detailed hint! - First, figure out how much water she drinks in a year. To compare to the filter options, you need to know the number of gallons per year. For a precise finat answer, do not round this vatue too much! - How many bottles is that and how much would that many cost? That is the baseline price. - For each filter option, determine the number of fitters needed, then the cost for the device plus any extra necessary replacement filters. For example, the faucet mounted filter costs $28 and will filter 100 gallons with the included fitter. To fitter up to 200 gallons, it would cost an extra $11 for another fitter. and so on. But per the instructions, filter cost should be pro-rated, so for example, if you need to filter 275 gallons total, assume you need 2.75 filters. Since one is provided, additional filters would then cost 1.75(11)=519.25. - Figure out the total cost. That is the cost for the reusable water bottle, plus the device cost, plus the
