Averages

Five years ago, Nuri was thrice as old as Sonu. After ten years from now, Nuri will be twice as old as Sonu. Find the p...

In a class of 40 students, the ratio of boys to girls is 3:2, and the average marks scored by boys is 42, while the ave...

Asha is twice as old as Anita. Three years ago, she was three times as old as Anita. How old is Asha now? ...

The average of 12 numbers is 15, and the average of the first two numbers is 14. What is the average of the remaining n...

The average of four numbers is 40. If the first number is one-third of the sum of the remaining numbers, then the first...

The mean of observations is 43. Later, it was found that 59 was misread as 69. What would be the correct mean? (correct...

The average of five consecutive natural numbers is 13. If the next two natural numbers are also included, then find the ...

If the average of 15, 25, 19, 20, 23, 18, and $$(x - 3)$$ is 20, then find the average of $$x$$, $$(x + 6)$$, $$(2x - 1...

In a Physics test, the average marks of girls in a class is 40. If the average marks of the first 20 girls is 50 and th...