Can anyone help me with this problems? This is contribution marign.

Case (Contribution)

1. Units Sold- 15,000, Sales- $200,000, Variable Expense- $125,000, Margin per unit- ???, Fixed Expenses- $50,000, Net Income (Loss)- ???

2. Units Sold- ???, Sales- $140,000, Variable Expense- ???, Margin per unit- $10, Fixed Expenses- $45,000, Net Income (Loss)- $8,000

Case (Avg. Contribution)

1. Sales- $500,000, Variable Expenses- ???, Margin Ratio- 20%, Fixed Expenses- ???, Net Income (loss)- $7,000

2. Sales- $400,000, Variable Expenses- $280,000, Margin Ratio- ???, Fixed Expenses- $100,000, Net Income (loss)- ???