Question

Michael bought 2 notebooks and 1 pen for $7. Rick bought 1 notebook and 5 pens for $8. How much does a notebook cost?


$3


$1


$2.50


$2

Answer 1

let notebook be x, and pen be y
so 2x+y=7
x+5y=8
now you use simultaneous equations and find what x and y are

Answer 2

Solve the above two equations. They want just the cost of the notebook. So we need to solve for x. Multiply the first equation by 5 and subtract the second equation to find x.

Answer 3

I can just read the question and tell the answer. You need to use some common sense,hun.