PLS help With math work

Answer:
The student earns $5.25 more per hour as a store clerk
Step-by-step explanation:
[tex]baby \: siting \: per \: hour \\ 67.20 \div 6 \\ = 11.25 \\ store \: clerk \: per \: hour \\ 742.50 \div 45 \\ = 16.5 \\ so \: the \: clerk \: earns \: more \\ to \: know \: how \: \\ much \: more \: the \: clerk \: earns \\ substract =16.5 - 11.25 \\ = 5.25 [/tex]