Posted by Anonymous on Saturday, October 29, 2011 at 2:08pm.
3r-5s= -4
5r+3s= 16
Multiply the 1st equation by 5 and the second by 3...
15r-25s= -20
15r+9s=48
Subtract both
-34s= -68
divide by -34
s=2
substitute
3r-10= -4
3r=6
r=2
sixty is 5/6 of what number
60*6
DUH!