A water tank has two holes. The 1st hole alone makes the tank empty in 3 min and 2nd hole alone makes the tank empty in 5 min. If water leaks out at a constant rate, how long in minutes does it take if both the holes together empty the tank?
About 93% of Tribal women cannot contest for the post of Sarpanch in Rajasthan as they are not educated enough. What are the educational qualification necessary?