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**The average of nine number is 50. The average of first five numbers is 54 and that of the last three numbers is 52. Then the sixth number is :**

A. 30
B. 34
C. 24
D. 44
**Answer: Option C**

## Show Answer

Solution(By Apex Team)

Average of 9 numbers = 50
Hence sum of 9 numbers = 450
Average of last three numbers = 52
Hence sum of them will be = 156
Average of first five numbers is = 54
Hence sum of them will be = 54 × 5 = 270
So 6th number will be = sum of 9 numbers – (sum of first five numbers + sum of last three numbers)
= 450 – (156 + 270)
= 24

## Related Questions On Average

### Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average19 people went to a hotel for combine dinner party 13 by 8 runs. His new average is:

A. 20B. 21

C. 28

D. 32

### Find the average of all the numbers between 6 and 34 which are divisible by 5.

A. 18B. 20

C. 24

D. 30

### In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only son is 27 years. What is the age of the son?

A. 10 yearsB. 10.5 years

C. 11 years

D. 12 years

### If the arithmetic mean of 0, 5, 4, 3 is a, that of -1, 0, 1, 5, 4, 3 is b and that of 5, 4, 3 is c, then the relation between a, b, and c is.

A. a = b = cB. a : b : c = 3 : 2 : 4

C. 4a = 5b = c

D. a + b + c = 12