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.
For P, the profit/total cost is 5/20
For Q, the profit/total cost is 10/25
For R, the profit/total cost is 20/25
For S, the profit/total cost is 10/75
This ratio is clearly highest for R.