Question

Help please this is due today, Approximately how many cups of aquarium salt mix should Julian use for 30 gallons of purified water? Round your answer to the nearest cup.


16 7/8 cups

17 1/4 cups

17 3/8 cups

16 3/4 cups

Answer 1

Complete Question :- julian wants tanks to hold 30 gallons of water. the content of saltwater should be 3.5% sale and 96.5% purified water. set up a proportion to first find the number of gallons of salt mix that should be added. then use another proportion to find the number of pints of aquarium salt mix that julian should use for 30 gallons of purified water. round your answer to the nearest tenth. note there are 8 pints in one gallon.

approximately how many pints of aquarium salt mix should julian use for 30 gallons of purified water? round your answer to the nearest 1/10 cup.

a. 7 7/10

b. 8 8/10

c. 8 7/10

d. 7 8/10

Answer :-

→ Total water = 30 gallons = 30 * 8 = 240 pints .

now,

→ saltwater = 3.5% of total = (240 * 3.5)/100 = 8.4 pints .

→ purified water = 96.5% of total = 240 - 8.4 = 231.6 pints .

so,

→ for 231.6 pints of purified water salts used = 8.4 pints

→ for 1 pints of purified water salts used = (8.4/231.6) = (7/193)

→ for 240 pints of purified water of purified water salts used = (7/193) * 240 = (1680/193) ≈ 8.70 = 8(7/10) cup . (C) (Ans.)

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Answer 2

Answer:

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