Quicker Method: Here, no need to caculate the % mark obtained by each student in Maths and Hindi together. Just check which two students have secured the least marks in Maths and Hindi together. Therefore, our answer is Satya
Maximum percentage difference in the marks obtained means: subtract the student's marks who secured the minimum marks to the one who secured maximum marks. So, req. % = $135-72 \over 150$ $\times$100 = 42%
A passenger train covers the distance between stations X and Y 50 minutes faster than a goods train. Find this distance if the average speed of the passenger train is 60 kmph and that of goods train 20 kmph.
Total age of Ram and Shyam is 15 years more than that of Shyam and Mohan. While the average age of Ram, Shyam and Mohan is equal to that of Ram and Shyam. Then what is the difference between the ages of Ram and Shyam?
Pipe A usually fills a tank in 2 hours. On accunt of a leak at the bottom of the tank, it takes pipe A 30 minutes more to fill the tank. How long will the leak take to empty a full tank if pipe A is shut?