How much water does Janine drink in a day She normally drink

How much water does Janine drink in a day? She normally drinks 3 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 $2.89. 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) o 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 2 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.

Solution

Option 1 . using water bottles : cost of 24 water bottles =$ 2.89

cost of 3 water bottles = 2.89 x3/24

cost of water bottles per year = 2.89 x3x 365 / 24 = 131. 856

using water bottles the expentiture = 131. 856 +10 = $141 . 856 ------(1)

option 2 . filter cost = $28

1 ounce = 0.0295 L

water consumption in 1 year = 16.9 x3x 365=18505 ounce = 18505 x 0.0295 = 545 L

cost of refilling = $ 33

expentiture fir filter 1 = 28 +33 = $ 61

option 2 : filter 2 . filter cost $22

for 2 months it can filter 40 gallons = 40x378 /100 =151 L

water consumption is 545 L

6 refill must be used and tha costs=$ 30

total expentiture = 22 +30=$52

option 3 = Expentiture = $130

cheapest is buying filter no \'2\'

saving compared to water bottles = 141.856- 52 = $89. 856