For the field trip we bought 30 lunches.
Burgers were $3 and
sandwiches were $2. The
total money spent was
$80. Use elimination to
find the solution.

There are 20 people who had burgers while 10 had sandwiches.

Step-by-step explanation: First you set up the two equations:

x+y=30

3x+2y=80

Then you start the elimination process by making either the x or the y the opposite of one another (I’m using y):

-2x+-2y=-60

3x+2y=80

Eliminate!

x=20

Plug in x to check and solve for y!

$450

step-by-step explanation:

first, you have to multiply 150x2=300

next, you have to add 150+300= 450