The average income of A, B and C is Rs. 12,000 per month and average income of B, C and D is Rs. 15,000 per month. If the average salary of D be twice that of A, then the average salary of B and C is in Rs. :

A. 8,000

B. 18,000

C. 13,500

D. 9,000

Show Answer


Solution(By Apex Team)

$\begin{array}{l}A+B+C=12000\times3\\ B+C+D=15000\times3\\ \rightarrow D-A=3000\times3=9000\\ \text{ Also, }D=2A\\ \text{ Then, }D=18000\text{ and }A=9000\\ \text{Therefore},\\ \text{Average salary of B and C}\\ =\Large\frac{45000-18000}{2}\\ =13500\end{array}$

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

Leave Your Thoughts Here...