Question 108857
Peter delivers 110 newspapers on the weekend.  He delivers 20 more newspapers on Sunday than on Saturday.  How many newspapers does he deliver each day?
x+y=110
y=x+20
===================
x+(x+20)=110
2x=110-20
2x=90
x=45
on Saturday he delivers = 45
on Sunday he delivers = 45+20=65
:)