The average age of P, Q and R is 15 years more than R's age. If the total age of P and Q together is 39 years, then R's …

The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was…

If the average of 5 numbers is 10, the number which should be added to make the average 12 is-

A passenger travels from Delhi to Merut at a speed of 30 kmph and return with a speed of 60 kmph. What is the average sp…

The average age of four brothers is 12 years. If the age of their mother is also included, the average is increased by 5…

The body weight of seven students of a class is recorded as 54 kg, 78 kg, 43 kg, 82 kg, 67 kg, 42 kg and 75 kg. What is …

The average weight of 12 crewmen in a boat is increased by $$\frac{1}{3}$$ kg, when one of the crewmen whose weight is 5…

The total marks obtained by a student in Physics, Chemistry and Mathematics together is 120 more than the marks obtained…