Question

If I buy 2 apples and 6 oranges, I will spend $5.60. However, if I buy 6 apples and 2 oranges, I will spend $4.80. How much does one orange cost?
A. $0.55
B. $0.70
C. $0.75
D. $0.60

Answer 1

2x + 6y = 5.60
6x + 2y = 4.80

Answer 2

I still don't understand.. :/ Math is so confusing to me!

Answer 3

Use substitution or elimination. I would prefer to use elimination.

Answer 4

Actually, you don't need that other part. But yeah, do what Fakshon said

Answer 5

:/ Can you give an example?

Answer 6

2x + 6y = 5.60
6x + 2y = 4.80

Turn get rid of the y's:

2x+6y = 5.60
(-3)6x+(-3)2y = (-3)4.80

2x+6y = 5.60
-18x-6y = -14.40

Then add the to together:

-16x = -8.8

divide both by -16

x = 0.55

So an apple costs .55

Plug that in to the first equation:

2(.55)+6y = 5.60

1.10+6y=5.60
-1.10 -1.10

6y = 4.50

Divide both by 6:

y = .75

So an orange costs .75

Answer 7

Thank you!!