Unit Conversion and Equation Solving

Rachel explains conversion factors in word problems, using unit factors like seconds per minute and hours per day. She provides a practical example with a word problem involving distance and time, demonstrating how to solve it using equations. The video concludes with a summary of the key points.

What is a conversion factor?

• A method to change units of measurement.

• A technique to solve algebraic equations.

• A tool to calculate speed.

• A way to measure distance.

Which of the following is an example of a unit factor?

• 10 pounds per inch

• 5 kilometers per hour

• 60 seconds per minute

• 100 meters per second

How many hours are there in a day according to the unit factor?

• 48 hours

• 12 hours

• 36 hours

• 24 hours

What is the purpose of using unit factors in word problems?

• To solve for unknown variables

• To estimate approximate values

• To convert units of measurement

• To simplify complex equations

In the example problem, what is Jessica's speed?

• 50 miles per hour

• 40 miles per hour

• 30 miles per hour

• 60 miles per hour

What is the total distance Jessica needs to travel in the example problem?

• 200 miles

• 150 miles

• 250 miles

• 100 miles

How do you set up the equation to solve for time in the example problem?

• 40 = 200 / X

• X = 200 / 40

• X = 40 * 200

• 40 * X = 200

What is the first step in solving the equation 40 * X = 200?

• Add 40 to both sides

• Divide both sides by 40

• Subtract 40 from both sides

• Multiply both sides by 40

What is the value of X in the equation 40 * X = 200?

• 6

• 4

• 7

• 5

How long will it take Jessica to travel 200 miles at 40 miles per hour?

• 6 hours

• 5 hours

• 4 hours

• 7 hours