Question

boll bought 13 notebook, 26 pens, and 19 markers for 25 dollars. paula bought 27 notebooks,18 pens, and 31 markers for 31 dollars. how many dollars would it cost greg to buy 24 notebooks and 12 pens and 52 markers?

pls answer​

Answer 1

You will need to set up two equations:

A. 2.75x + 3.25y = 17.50

B. x + y = 6 (x is the number of packs of pens, and y is the number of packs of markers, and we know from the question that 6 packs total were purchased)

It is easiest to first solve for one variable in the second equation:

x + y = 6

x = 6 - y

We can then plug that into the first equation, and solve for y as normal:

2.75(6-y) + 3.25y = 17.50

16.5 - 2.75y + 3.25y = 17.50

16.5 + 0.5y = 17.50

0.5y = 1

y = 2

Now that we have a numerical value for y, we can plug that into either equation, but easiest to plug into equation 2:

Answer 2

Answer:

The answer for the sum is y=2