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Algebra I - Review 9

(10 Questions)
1 viewed last edited 4 years ago
Algebra I
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Two airplanes left the same airport traveling in opposite directions. If one airplane averages 400 miles per hour and the other airplane averages 250 miles per hour, in how many hours will the distance between the two planes be 1625 miles?
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A pharmacist mixed some 10%-saline solution with some 15%-saline solution to obtain 100 mL of a 12%-saline solution. How much of the 10%-saline solution did the pharmacist use in the mixture?
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Solve.
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One pipe can fill a tank in 20 minutes, while another takes 30 minutes to fill the same tank. How long would it take the two pipes together to fill the tank?
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Solve.
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Andy’s average driving speed for a 4-hour trip was 45 miles per hour. During the first 3 hours, he drove 40 miles per hour. What was his average speed for the last hour of his trip?
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Lisa will make punch that is 25% fruit juice by adding pure fruit juice to a 2-liter mixture that is 10% pure fruit juice. How many liters of pure fruit juice does she need to add?
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Solve.
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Which fraction equals the product shown?
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What is the simplest form of the fraction shown?
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