Please help me solve the questions below.

Iron Man Enterprises is considering undertaking a massive upgrading of their production & manufacturing equipment. The modification will allow for increased quality & improved efficiencies around the manufacturing process (less waste & repairs). The increased quality will allow for a higher selling price and greater product margin. The cost to undertake this upgrade is $560,000 on top of the current fixed costs of $285,000. Cost information is as follows: Current Equipment Upgraded Equipment Selling price per unit $15 $21 Variable cost per unit $11 $8 a) What is Iron Man Enterprise's breakeven point in units with the current equipment & upgraded equipment (4 marks) b) Determine the sales level at which the modified equipment earns a 20% target profit - sales ratio (ignore income taxes) (4 marks) c) Determine the sales level at which profits will be the same under both the current and upgraded equipment (4 marks)