Please show step by step solution

7. (a) Explain the components of a Break-even chart. (b) The cost and sales data of Adil and Co. are given below : Consider eacn or the rolrowing cases separately (i) What is the annual break-even point in taka and in units? (ii) If 35,000 units were sold, what would be the net profit or loss? (iii) If sales commission were discontinued in favor of a Tk. 8,000 increase in fixed salaries, what would be the annual breakeven point in Tk. and in units? (iv) Keeping regular Tk. 0.25 commission still in force, if the store manager were paid Tk. 010 per unit as commission on each unit sold in excess of break-even point. What would be the net income if 50,000 units were sold