Alexis, becca, and cindy do volunteer work at adopt-a-pet animal shelter. they worked a total of 285 hours at the shelter last summer. alexis worked 15 hours less than becca. cindy worked 4 more than twice as many hours as becca.

write and solve an equation that expresses the relationship between the number of hours each student worked last summer and the total number of hours worked. define the variable used in your equation.

how many hours did each student work?

i really need the answer to this by monday so if you have the time.