The average of 30 numbers is 40 and that of other 40 numbers is 30. The average of all the numbers is :

A family consists of two grandparents, two parents and three grandchildren. The average age of the grandparents is 67 ye…

In a certain factory there are five workers A, B, C, D and E. A can complete a work in 4 minutes, B in 5 minutes, C in 6…

The average age of the boys in a class is 16 years and that of the girls is 15 years. The average age for the whole clas…

The average of 50 numbers is 30. If two numbers, 35 and 40 are discarded, then the average of the remaining numbers is n…

A batsman in his 12<sup>th</sup> innings makes a score of 63 runs and there by increases his average score b…

The average price of 10 books is Rs.12 while the average price of 8 of these books is Rs.11.75. Of the remaining two boo…

Find the average of 1.11, 0.01, 0.101, 0.001, 0.11 = ?