Answer:
$8/hour and 75 hours
Explanation:
In order to find how much money Pauline made per hour, we can just use division instantly. Let the amount of money made be x;

x = $8/hour
Since we've found how many Pauline made per hour, we can now find how many hours Pauline needed to work to make $600, also by division. Let the amount of hours needed for Pauline to work to make $600 be y;

y = 75 hours