Answer:
$0.45 or 45 cents
Step-by-step explanation:
Let x = carton of milk
y = sandwich
2x + y = 3
2y = 4.2
Let's use the substitution method to solve this
First, divide both sides by 2 in the second equation
2y/2 = 4.2/2
y = 2.1
Substitute the new y into the first equation
2x + 2.1 = 3
Now subtract 2.1 from both sides
- 2.1 - 2.1
2x = 0.9
Divide both sides by 2 to isolate the x variable
2x/2 = 0.9/2
x = 0.45
0.90 cents
one sandwich costs $2.10
so subtract that from the $3.00
which is $0.90
-28%
I think it might be a I don't know for sure though I just need some more points so I can ask a question myself sorry if this didn't help
26 divided by 33
Equals: 0.78787878787 etc
%: 78 or 79 percent