The two high schools, Jeff erson Hills East and Jeff erson Hills West, are taking fi eld trips to the state capital. A total of 408 students from Jeff erson Hills East will be going in 3 vans and 6 buses. A total of 516 students from Jeff erson Hills West will be going in 6 vans and 7 buses. Each van has the same number of passengers and each bus has the same number of passengers. a. Write a system of equations that represents this problem situation. Let x represent the number of students in each van, and let y represent the number of students in each bus. b. How are the equations in the system the same? How are they diff erent? c. Describe the fi rst step needed to solve the system using the linear combinations method. Identify the variable that will be eliminated as well as the variable that will be solved for when you add the equations. d. Solve the system of equations using the linear combinations method. Show your work. e. Interpret the solution of the linear system in terms of t

Guest Jan 12, 2021

#1**+1 **

3x + 6y = 408

6x + 7y = 516

Eliminate x

Multiply the first equation through by -2

-6x - 12y = - 816

6x + 7y = 516 add these

-5y = -300 divide both sides by -5

y = 60 = stidents in each bus

3x + 6(60) = 408

3x + 360 = 408 subtract 360 from both sides

3x = 48 divide both sides by 3

x = 16 = students in each van

CPhill Jan 12, 2021