A boat takes 40hrs to travel downstream from point P to point Q and coming back to point R midway between P and Q. If the velocity of the stream is 8km/hr and the speed of the boat in still water is 10km/hr. What is the distance between P and Q?

 Tripitakas’ are sacred books of

Choose the nearest meaning:

Here all my most favorite flowers grow in wild profusion.

The mean of 100 items was 44. Later on it was discovered that item 15 was misread as 51 and another item 45 was misread as 54. It was also found that the number of items was 90 and not 100. Then what is the correct mean?

The average age of the boys in a class is 12 years. The average age of the girls in the class is 11 years. There are 50 % more girls than boys in the class. Which one of the following is the average age of the class (in years)?