X can do a work in 3 days, Y does three times the same work in 8 days, and Z does five times the same work in 12 days. If they have to work together for 6 hours in a day, then in how much time can they complete the work?
A hunter fires two shots from the branch of a tree at an interval of 76 secs. A tiger separating too fast hears the two shots at an interval of 83 secs. If the velocity of the sound is 1195.2 kmph, then find the speed of the tiger?