For a new product, a manufacture sets up an infrastructure which costs him Rs 150000. The variable cost (labour, materials etc.) is estimated Rs 125 for each unit of the product. The sale price per unit is fixed at Rs 160. Write down the cost function C(x). Revenue function R(x) and profit function P(x) for x units of the product. How many minimum number of units are to be produced in the first year of production so that there may be no loss during that year?