Quinn earns $102.00 per every 8 hours worked. Thus we need to find out how much she makes per hour. If 8 hours = $102.00, then 1 hour= 102/8. This equates to precisely $12.75 an hour. At her second job, we need to find out how much she makes per hour as well. She earns $40.50, per 180 minutes or 3 hours. If 3 hours= $40.50 then 1 hour=40.50/3 which equates to $13.50 per hour. Thus, she makes more in her second job per hour * It is important to note, not to let the minutes and hours confuse you. Just convert it.
Make sure to put what kind of maths (geometry algebra ect.) this is so others can meet your needs better. Also might want to put what unit or type of problem this is as well.