Question 169574
lets call x and y the number of workers paid 80 and 85 dollars respecitively
:
80x+85y=1225...eq 1
:
80(x=.5x)+85(y-1/5y)=1540---->
120x+68y=1540....eq 2
:
multiply eq 1 by 3 and eq 2 by -2 to eliminate the x terms
:
255y=3675
-136y=-3080
_____________
119y=595
:
{{{highlight(y=5)}}} 85 dollar workers
:
plug y's value into eq 1 or 2...I chose eq 1
:
80x+85(5)=1540
80x=800
:
{{{highlight(x=10)}}} 80 dollar workers