XYZ Manufacturing Inc. has a maximum production capacity of 50,000 units per month. Below is the cost data for different activity levels:

Particulars of Costs	30,000 units	40,000 units	50,000 units
Direct Material	₹18,00,000	₹24,00,000	₹30,00,000
Direct Labour	₹22,50,000	₹30,00,000	₹37,50,000
Total Factory Overheads	₹30,00,000	₹40,00,000	₹50,00,000

You are required to calculate:

1. The total cost at an activity level of 45,000 units.
2. The cost per unit at this activity level.
3. The selling price per unit if a profit margin of 20% on cost is desired.
4. The breakeven point in units if the fixed overheads are ₹10,00,000 per month and the variable cost per unit is constant.