A. Bernoulli's business budget included sales of $ 350 000 and fixed costs of $ 52 600. If the total contribution margin for the business was $125 000; alFind the contribution rate as a percentage approximated to the nearest 100" B)What are the sales needed to break even? Round to the nearest hundred. 5. In order to pay his university fees, Feynman borrowed $ 7000 for five months at 5.5 % Calculate the amount of simple interest that Feynman ought to pay. Approximate your answer to the nearest 100th. 6. Compute the amount of interest that Ms. Curie will be charged on $ 9000 that she borrowed for four months at 9 %. Round to the nearest one. Remark: Here and henceforth assume simple interest unless otherwise stated.3. Planck, the new owner of the vehicle accessory shop, is considering buying sets of winter tyres for $ 399 per set and selling each set at $ 520. Fixed costs related to this operation amount to $ 3250 per month. It is expected that 18 sets per month could be sold. How much profit (per set) will Planck make each month? Round to the nearest one. Hint: use the contribution margin approach