Ramu sees a train passing over a 1 km long bridge. The length of the train is half that of the bridge. If the train clears the bridge in 2 min, the speed of the train is – 

A batsman scores 98 run in the 17^th match of his career. His average runs per match increased by 2.5. What is his average before the 17^th match?

The ratio of milk and water in mixture of four containers are 5:3,2:1, 3:2 and 7:4 respectively. In which container is the quantity of milk, relative to water, minimum?

What is the difference between 0.6 and 0.6%?

The least number that must be subtracted from 1294 so that the remaining number when divided by 9, 11, 13 will leave in each case the same remainder 6 is:

The simple interest and the true discount on a certain sum for a given period and at a given rate are 25 and 20 respectively. The sum is 

Some litres of acid were drawn off a 54-litre vessel full of acid and an equal amount of water added. Again, the same volume of the mixture was drawn off and replaced by water. As a result, the vessel contained 24 litre of pure acid. How much of the acid was drawn off initially?

A mathematics teacher calculated the total marks obtained by 35 students of 8th class . The average marks of the students were 72. But 36 marks for Reena was calculated in place of 86 obtained by her. What was the correct average of all the students?