Answer:
A. Tim's pay rate is $3/hr than Susie's
B. Tim worked 6 years longer than Susie
Explanation:
Timmy makes $720 in 40 hrs
=> he makes 720/40 = $18.00/hr
Susie makes $600 in 40 hrs
=> she makes 600/40 = $15.00/hr
So Tim makes 18 - 15 = $3/hr than Susie
50 cent = $0.5
If pay raise is $0.5/yr
=> 3/0.5 = 6 yr
Tim worked 6 years longer than Susie