Saline Solutions and Pipe Rates

The video tutorial covers solving various math problems, including simplifying fractions, mixing saline solutions, calculating average speed, and determining the time to fill a tank using two pipes. Each problem is broken down step-by-step, demonstrating the application of mathematical concepts such as finding common denominators, setting up equations, and using rates to solve real-world problems.

What is the equivalent fraction of 3x/5 divided by (x + 4)/(x + 2)?

• 3/5

• 2/3

• 4/5

• 5/4

In the saline solution problem, what is the total amount of saline in the final mixture?

• 20 milliliters

• 10 milliliters

• 12 milliliters

• 15 milliliters

How much of the 10% saline solution did the pharmacist use?

• 50 milliliters

• 70 milliliters

• 40 milliliters

• 60 milliliters

What is the average speed for the last hour of Andy's trip?

• 60 miles per hour

• 50 miles per hour

• 45 miles per hour

• 40 miles per hour

What is the total distance Andy traveled during his trip?

• 150 miles

• 180 miles

• 120 miles

• 200 miles

How far did Andy travel in the first 3 hours?

• 160 miles

• 140 miles

• 120 miles

• 100 miles

How long does it take for both pipes to fill the tank together?

• 25 minutes

• 20 minutes

• 15 minutes

• 10 minutes

What is the rate of the first pipe in tanks per minute?

• 1/10

• 1/30

• 1/15

• 1/20

What is the rate of the second pipe in tanks per minute?

• 1/10

• 1/15

• 1/20

• 1/30

What is the combined rate of both pipes in tanks per minute?

• 1/30

• 1/20

• 1/15

• 1/10