Word Problems on Equations and Costs

What is the first step in solving a system of equations from word problems?

• Write the equations

• Define the variables

• Solve the system

• Check the solution

In the first word problem, what is the equation for the first number?

• x = 3y + 17

• x + y = 41

• x = 3y - 17

• x = y + 17

How many nickels does Raj have in the second word problem?

• 52

• 39

• 91

• 17

What is the cost equation for dimes and nickels in the second word problem?

• 0.10x + 0.05y = 91

• x + y = 91

• x + y = 7.15

• 0.10x + 0.05y = 7.15

In the third word problem, what is the cost of a pencil?

• $1.00

• $0.75

• $1.15

• $0.60

What method is used to solve the system in the third word problem?

• Substitution

• Graphing

• Matrix

• Elimination

What is the perimeter formula used in the fourth word problem?

• x + y = 36

• 2x + 2y = 36

• 2x + y = 36

• x + 2y = 36

In the fifth word problem, how many minutes did Ben use?

• 72

• 36

• 18

• 90

What is the cost of an apple in the last word problem?

• $0.24

• $0.60

• $0.53

• $1.15

What is the equation for the total cost of Nico's purchase in the last word problem?

• 17x + 12y = 2.84

• 3x + 4y = 2.84

• 17x + 12y = 10.44

• 3x + 4y = 10.44