A person loses 75% of his money in the first bet,75% of the remaining in the second and 75% of the remaining in the third bet and returns home with Rs.2 only. His initial money was

If 50% of a reaction occurs in 100 second and 75% of the reaction occurs in 200 second, the order of this reaction is :

75% of a first order reaction is completed in 32 min. 50% of the reaction would have been completed in

A first orde reaction is 75% completed after 32min. When was 50% of the reaction completed?

40% of the passengers from a train got down at station X, 75% of the remaining got down at station Y .If the remaining 12 were taken to station Z ,how many passengers were there in the train?