6. A bicycle shop sells road bikes and town cruisers. It takes 2 hours to assemble a road bike. It takes 1 hour to assemble a town cruiser. There is a maximum of 60
hours to complete the assembly for the week. After assembly, for safety
reasons the assembly needs to be checked and tested. It takes 1 hour to check
and test the road bikes and % hour to check and test the town cruisers. There is
a maximum of 20 hours to complete these tasks.

a. What is the system of inequalities that represents this situation?
b. What does the graph of the solutions explain (write a few sentences)?