A motorist travels to a place 150 km away at an average speed of 50 km/hr and returns at 30 km/ hr. His average speed fo…

19 people went to a hotel for combine dinner party 13 of them spent Rs. 79 each on their dinner and rest spent 4 more th…

The mean of 50 numbers is 30. Later it was discovered that two entries were wrongly entered as 82 and 13 instead of 28 a…

If the average of 5 consecutive integers is x then, find the average of next to next 5 consecutive integers.

If the average of x and $$\frac{1}{x}$$ (x $$ \ne $$ 0) is M, then the average of x<sup>2</sup> and $$\frac…

The average age of 10 children is 9 years 9 months. The average of 9 children is 8 years 11 months. What is the age of t…

The average weight of 16 boys in a class is 50.25 kgs and that of the remaining 8 boys is 45.15 kgs. Find the average we…

A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must …