Answer:
-323.4375
Step-by-step explanation:
$ 720
Normal time $ 15
Overtime: 15 x 1/3 = $5 + $15 = $20
(40 x 15) + (6 x 20) = 600 + 120
(b)
a=1,500,000
b=3,050,000
x= -3/5