Tony earned $220
Explanation:
Tony = n
Jenifer = x
Chris = y
x = 2n - 40
y = n + 60
Write an equation for the total the three waiters earned. Solve for Tony's earnings.
n + x + y = $900
n+2n−40+n+60=900
Step 1: Simplify both sides of the equation.
n+2n−40+n+60=900
n+2n+−40+n+60=900
(n+2n+n)+(−40+60)=900(Combine Like Terms)
4n+20=900
4n+20=900
Step 2: Subtract 20 from both sides.
4n+20−20=900−20
4n=880
Step 3: Divide both sides by 4.
4n/4 = 880/4
n=220