Cost and Rate Word Problems

The video tutorial covers lessons 20 and 21, focusing on evaluating expressions using multiplication, division, and addition. Lesson 20 emphasizes writing and evaluating expressions with multiplication and division, using examples like calculating the number of M&Ms in bags. Lesson 21 shifts to expressions involving multiplication and addition, illustrated through scenarios like taxi fare calculations. The tutorial concludes with practical word problems for students to solve, reinforcing the concepts taught.

If each bag contains 25 M&Ms, how many M&Ms are there in 3 bags?

• 50

• 125

• 75

• 100

What expression represents the total number of M&Ms in B bags?

• B + 25

• B/25

• 25-B

• 25B

How can you find the number of bags if you know the total number of M&Ms, M?

• Multiply M by 25

• Divide M by 25

• Subtract 25 from M

• Add 25 to M

What is the total fare for a 10-mile taxi ride with a $5 flat rate and $1.25 per mile?

• $22.50

• $17.50

• $12.50

• $27.50

If a taxi ride costs $23.75 for 15 miles, what is the cost per mile?

• $1.50

• $1.25

• $1.75

• $1.00

What is the expression for the total cost of a taxi ride for M miles?

• 5 + 1.25M

• 5M + 1.25

• 5M - 1.25

• M/1.25 + 5

If Brian's family travels 60 miles in 2 hours, what is their average speed?

• 20 mph

• 30 mph

• 40 mph

• 50 mph

For a pizza order, if each pizza costs $6 and delivery is $2, what is the total cost for 3 pizzas?

• $18

• $20

• $22

• $24

What is the expression for the total cost of P pizzas with a $2 delivery charge?

• 2P + 6

• 6P + 2

• 6 + 2P

• P/6 + 2

If Jonin orders 4 pizzas, what is the total cost including delivery?

• $26

• $28

• $24

• $30