I need help with this practice problem.

Using the diagram:

1. Identify what resource is the bottleneck
2. what product would you make more of and why?
3. How many ovals and rectangles should be sold each week?
4. What is the contribution margin based on answer 3?

Purchase X $30 Process X and Y at A 40 minutes Assemble X Ovale Y with Y at B Purchase Max demand for 20 Y 100/week minutes $25 Price $100 Process Y Purchase at B Y 5 minutes $25 Acgemble Y Rectangles with Z at A Max demand 90/week for 40 Price $50 munutes Purchase Process Z Z at B $7 10