Answer
$271.46
Step-by-step explanation
Mary makes $17.50 per hour
Tim makes $5.32 less per hour than Mary
That is, Tim makes $17.50 - $5.32 = $12.18 per hour
We are now asked to find how much Mary would make more than Tim if Mary worked 35 hours and Tim worked 28 hours.
If Mary worked 35 hours
Total money made = ($17.50 per hour) (35 hours) = $612.5
If Tim worked for 28 hours,
Total money made = ($12.18 per hour) (28 hours) = $341.04
Mary's income will exceed Tim's own by (612.5 - 341.04) = $271.46
Hope this Helps!!!