Coffee Blends and Train Problems

The video tutorial covers applications of systems of equations through various examples. It begins with a problem involving course credits, followed by a cost problem with CFL light bulbs, a coffee blend problem, and concludes with a train meeting problem. Each example demonstrates different methods to solve systems of equations, such as elimination and substitution, providing a comprehensive understanding of the topic.

In the course credits problem, what is the total number of courses taken by the team?

• 30

• 60

• 40

• 50

How many 4-credit courses are being taken by the team?

• 16

• 20

• 28

• 24

In the light bulbs problem, what is the cost of a CFL bulb from Home Mart?

• $3.50

• $4.00

• $2.50

• $3.00

How many bulbs were purchased from Supply Depot?

• 180

• 165

• 150

• 135

In the coffee blend problem, what is the total weight of the coffee blend?

• 20 pounds

• 15 pounds

• 10 pounds

• 5 pounds

How many pounds of $8.00 per pound coffee are used in the blend?

• 6

• 4

• 8

• 2

In the train meeting problem, what is the speed of the express train?

• 50 mph

• 25 mph

• 60 mph

• 40 mph

How long after the first train does the express train leave?

• 2.5 hours

• 2 hours

• 1.5 hours

• 1 hour

What is the formula used to solve the train meeting problem?

• Distance = Speed x Time

• Time = Distance / Speed

• Speed = Distance / Time

• Distance = Time x Speed

Approximately how far from the starting station will the trains meet?

• 84.25 miles

• 64.25 miles

• 54.25 miles

• 74.25 miles