Management Aptitude Test Sep 2011 Paper

An oil refinery takes 100 L of crude oil as input and after refining for 1 h gives certain amount of output oil X L. This can be sold in the market at a profit of ₹ 30 per L. If this oil is further refined for $\frac{1}{2}$ h, it gives oil Y L. This can be sold at a profit of ₹ 50 per L. Output and input ratio at both the stages is 90% . The maximum amount that can be earned from 1000 L of crude input is