A milk vendor purchases pure milk at Rs. 10 per litre. The dishonest vendor mixes the 250ml of water for every one litre of pure milk. Find the percentage gain if he sells the mixture at Rs. 12 per litre.
A person invested a total of Rs. 57,500 at 4%, 5% and 8% per annum simple interest. At the end of the year, he received equal interest in all the three cases. The amount invested at 5% was:
In a 56 litres mixture, milk and water are in ratio 5 : 2. Some amount of milk is added to that mixture so that the ratio of milk and water becomes 7 : 2. Find the amount of milk in the final mixture.
A tap can fill a tank in 10 hours. After filling half the tank, four more similar taps are opened. What is the total time taken to fill the tank completely?
Two persons A and B are travelling with the speeds of ratio 3 : 4. A takes 30 minutes more time than B to reach the distance. Then find the time taken by A to reach the distance.
