Mary worked 10 hours last week and received $192 in tips for a total income of $292.
I don't see any answer options. The best I can assume is that h stands for hours. If so, Mary makes $5/hour. The 1932 doesn't have units, but I'll assume it is $. The $192, I'll guess, is her average weekly tip income. The difference between 292 and 192 is $100, so that would mean Mary worked 20 hours last week. Her tip income is almost double her salary.