The graph below shows total profit, labour cost and profit (in crore Rs.) of four different companies P, Q, R and S. Total cost is defined as the sum of labour cost and raw material cost. Read the graph and answer the questions.
The raw material cost for each of the companies P,Q,R and S respectively is 15, 15, 15, 40.
Hence, the lowest raw material cost per rupee of total cost is clearly lowest in S, which is 40/75. For the other companies, it is 15/25.