The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then …

Nine persons went to a hotel for taking their meals. Eight of them spent Rs.12 each on their meals and the ninth spent R…

The average weight of a group of 20 boys was calculated to be 89.4 kg and it was later discovered that one weight was mi…

If 25a + 25b = 115, what is the average of a and b?

The average of six numbers is 32. If each of first three numbers is increased by 2 and each of the remaining three numbe…

A librarian purchased 50 storybooks for his library. But he saw that he could get 14 books more by spending Rs. 76 more …

If a, b, c, d, e are five consecutive odd numbers, their average is :

The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. The a…