Assume that your present job pays a monthly gross salary of $1,560. you are offered a new position that pays $8.60 per hour with 1 1/2 times more per hour for all hours over 40 per week. how many hours of overtime per week would you need to work to earn the same amount per week as your present job?

There are 4 weeks in a month and 40 working hours in a week

Since the $8.60 per hour, the gross monthly salary for your new position = 8.60*40*4 = $1,376

Your gross monthly salary at present job = $1,560

So the additional amount that you need to earn at your new position = 1,560-1,376 = $184

The hourly wage for addtional hours more than 40 hours at the new position = 1 1/2 * 8.60 = 1.5*8.60 = $12.90

So, number of hours that you need to work extra = 184/12.90 = 14.26 hours per month

So, number of hours that you need to work extra per week = 14.26/4 =  3.566 hours or 3.57 hours (Rounded to 2 decimals)

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed