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Mathematics 18 Online
OpenStudy (anonymous):

There are about 1,400,000 drops in 25 gallons of liquid. What percent of a gallon is a single drop?

jimthompson5910 (jim_thompson5910):

1,400,000 drops : 25 gallons 1,400,000/25 drops : 25/25 gallons 56,000 drops : 1 gallons

jimthompson5910 (jim_thompson5910):

So there are 56,000 drops in 1 gallon of liquid

jimthompson5910 (jim_thompson5910):

Do you see how to get the answer from here?

OpenStudy (anonymous):

How do you find the percentage of it?

jimthompson5910 (jim_thompson5910):

divide both sides by 56,000 to get this 56,000 drops : 1 gallons 56,000/56,000 drops : 1/56,000 gallons 1 drop = 0.00001785714286 gallons

jimthompson5910 (jim_thompson5910):

so one drop is approximately 0.00001785714286 gallons

jimthompson5910 (jim_thompson5910):

convert that to a percentage

OpenStudy (anonymous):

What is the percent? about 0.18%? about 0.0018%?about 0.018%? about 1.8%?

jimthompson5910 (jim_thompson5910):

multiply 0.00001785714286 by 100 or move the decimal over 2 spots to get 0.001785714286 % Then round to 4 places to get 0.0018 %

OpenStudy (anonymous):

Thank You.

jimthompson5910 (jim_thompson5910):

np

OpenStudy (anonymous):

During a game, high school students sell snacks. They sell cold sandwiches for $2.50, hot dogs for $1.50, and hamburgers for $2. By the end of the day, the students have collected $1060.50 and sold 562 items. Casey estimates that the students sold twice as many hot dogs as cold sandwiches. If his estimate is correct, how many of each item did they sell? Solve by using row reduction.

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