ssccglapex

The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest ?

A. $15 \frac{1}{5}$ B. 14 C. $11 \frac{1}{5}$ D. 15 Answer: Option A
Show Answer

Solution(By Apex Team)

Average of twelve number = 15 Sum of twelve number = 15 × 12 = 180 Average of first two number = 14 Sum of first two number = 14 × 2 = 28 Sum of first two + Sum of rest = 180 Sum of rest = 180- 28 = 152 $\begin{array}{l}\text{Average of rest}\\ =\Large\frac{152}{10}\\ =15\Large\frac{1}{5}\end{array}$

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. 20
B. 21
C. 28
D. 32
Show Answer

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

A. 18
B. 20
C. 24
D. 30
Show Answer

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 years
B. 10.5 years
C. 11 years
D. 12 years
Show Answer

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 = c
B. a : b : c = 3 : 2 : 4
C. 4a = 5b = c
D. a + b + c = 12
Show Answer



More Related Questions On Average