P and Q can do a work in 10 days. Q and R can do it in 12 days. All three together can finish in 8 days.
In how many days can P and R can complete the work?
Ram travels a distance of 5 km from a place A towards north, and then turns left and walks 3 km, again turns right and walks 2 km. Finally, he turns right and walks 3 km to reach the place B.
What is the distance between A and B?