OBE Ltd. is a specialist in universal frames. For next year the expected profit is 20.000 if the normal production and sales can be achieved. The normal capacity is 500 units above the break-even point. The fixed cost per unit is 30, the proportional variable cost per unit is 10. a. calculate the selling price of the frame. b. calculate the normal volume for next year. c. calculate the fixed costs for next year. Could you help me solve this case for class please