With this word problem
ralph can lay down a floor tile in 5 seconds. bob can lay down a floor tile in 4 seconds. if both boys work together, how many seconds would it take them to install 450 floor tiles.

With #! i’ve tried to figure it out but i can’t.

What could explain what happened when the time was equal to 120 minutes

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.