Out of three numbers, the first is twice the second and is half of the third. If the average of the three numbers is 56,…

The average age of a class of 39 students is 15 years. If the age of the teacher is included, then the average increases…

Average of first five odd multiples of 3 is -

The average weight of 47 balls is 4 g. if the weight of the bag (in which the balls are kept) be included; the calculate…

The average age of mother and her six children is 12 years, which is reduced by 5 years if the age of mother is excluded…

The average age of an adult class is 40 years. 12 new students with an average age of 32 years join the class, thereby d…

The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. Wha…

The speed of the train going from Nagpur to Allahabad is 100 km/h while when coming back from Allahabad to Nagpur, its s…