There are many ways to solve this. I think the easiest way for this one is to add the equations up.

The you solve that, now that y is gone. You get x=2.
Now plug in x into one of the original equations.

Finish solving, and you get y=8.
The answer is (2,8)
P = 8 + 10 + 8 + 10
P = 36
..................................
Answer:
.15
Step-by-step explanation:
Your end goal is to make sure everything equals up to 1.
.60 + .25 = .85
Subtract that from 1 and you will get .15
Namely, how much is 1/4 of 1/2? well is just their product