The amount of money earned varies directly with the number of hours worked. If Jack earned $313.25 for 35 hours, then how many hours did he work when he earned $366.95?

Here ... we're dividing first to find out how much he makes per hour. 313.25 divided by 35 so he makes $8.95 per hour. now divide 366.95 by 8.95 to find out how many hours he worked this week, so this week he worked 41 hours this week.