(a) The cost of a refrigerator is Rs. 25000. The retailer of the refrigerator has kept the selling price as Rs. 30,000. What is the mark up as a percentage of the selling price? [1] (b) The above retailer has invested Rs. 1 crore on his showroom. He expects an annual return of 20% from his investment. How many refrigerators he needs to sell in a year at the above price to meet this return target? [2] (c) A doctor setting up her practice in a new town has decided to set up a clinic at a shop inside a mall for which the rent is Rs. 50000 per month. The cost of telephone, electricity, stationery etc. is Rs. 10000 per month She has also decided to hire an attendant at a salary of Rs. 10000 per month. If her consultation fee is Rs. 500 per patient how many patients would he need to see in a month in order to break even? [3] (d) A path lab offered her a deal to set up a collection center inside her clinic. The lab agreed to share 30% of the rent of the place and was willing to pay him Rs. 100 per patient referred by her to them. In this changed scenario, what it he number of patients she would need to break even. Assume that she would be able to refer 50% of her patients to the path lab. [4]