Please explain procedure when solving so I can understand.

28 29 30 31 32 33 The following assumptions apply unless an alternative is specifically given in a question i) The Sales Price per unit ii) Direct materials and direct labor costs per unit. iii) Variable General and Administrative costs per unit. iv) Fixed General and Administrative costs per month. v) Marginal tax rate on Income s s s s 75.50 20.50 15.50 350,000 21%