please solve asap i have examm right now

Aman Sdn Bhd has provided the following contribution format income statement. All questions concem situations that are within the relevant range. RM 500,000 Sales (10,000 units) Variable expenses Contribution Margin 220,000 280,000 Fixed Expenses 168,000 Net Operating Income 112.000 Required: a. Determine: i. The contribution margin per unit (2 marks) (CLO2:PLOS:C7) ii. The variable expenses ratio (2 marks) (CLO2:PLOS:C7) The breakeven point in total sales (2 marks) (CLO2:PLOS:C7) b. If sales decline to 6,000 units, determine the estimated net operating income. (3 marks) (CLO2:PLOS:C7) c. If the variable cost per unit increases by RM5, spending on advertising increase by RM2,000 and unit sales increase by 3,000 units, calculate the estimate net operating income? (12 marks) (CLO2:PLOS:C7) d. Estimate how many units must be sold to achieve a target profit of RM 672,000 (4 marks) (CLO2.PLO5:07)