SOLUTION: a restaurant bill of $350 was paid using $5 and $50 notes.The totalnumber of notes used was 16. a)write two equations in x and y to represent the information given b)hence,calcu

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equation Customizable Word Problems -> SOLUTION: a restaurant bill of $350 was paid using $5 and $50 notes.The totalnumber of notes used was 16. a)write two equations in x and y to represent the information given b)hence,calcu      Log On


   

Question 192763: a restaurant bill of $350 was paid using $5 and $50 notes.The totalnumber of notes used was 16.
a)write two equations in x and y to represent the information given
b)hence,calculate the number of $5 notes and the number of $50notes
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
let x and y be the number of 5 and 50 dollar notes respectively
:
a)x+y=16...........eq 1
5x+50y=350.......eq 2
:
b)rewrite eq 1 to x=16-y and plug it into eq 2
:
5(16-y)+50y=350
:
80-5y+50y=350
:
45y=270
:
highlight%28y=6%29 50 dollar notes
:
x=16-y=16-6=highlight%2810%29 5 dollar notes