please solve both parts urgently...time limit is very short... I'll give you up thumb definitely

a) Zen Ltd. Company produces and sells strings of colorful indoor/outdoor lights for holiday display to retailers for $8.42 per string. The variable costs per string are as follows: Direct materials $1.87 Direct labor 1.70 Variable factory overhead 0.57 Variable selling expense 0.42 Fixed manufacturing cost $245,650 per year. Administrative cost (all fixed) $301,505. Zen Ltd. expects to sell 225,000 strings of light next year. Required: 1. Calculate Contribution per unit and CS ratio (2 marks 2. Calculate the break-even point in units and value. (2 marks 4. Calculate the margin of safety in units, value and percentage. (3 marks) 5. Calculate estimated profit. (4 marks) 6. If the target profit is $400,000 then how many strings of lights to sell and how much Value? (2 marks) Yen Rippon is about to commence operations as a beauty technician. She believes her costs can be classified as fixed or variable. Outline how Yen could make use of costvolume-profit analysis to help guide her business operations. (6 marks)