## Intermediate Algebra for College Students (7th Edition)

$x=130,y=30$
As per the statement: $x+y=800/5$ and $x-y=800/8$ After adding the given two equations, we get $2x=160+100 \implies 2x=260$ or, $x=130$ Now, $130+y=800/5 \implies y=30$ Thus, $x=130,y=30$