Make an equation:
6x + 12 = 268.26
6x = 256.26
X = $42.71
The monthly payment is $42.71
If you divide both the Cashew butter and the macadamia butter in half and then multiply the peanut butter by 4 you will get $25.62 (after adding the answers up)
I'm pretty sure 4.82 as a simplified fraction is 241/50.
Here's the answer, using the quadratic formula