Question

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
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Answer 1

║⊕ANSWER⊕║

GIVEN

$A+B+C=12000*3\\B+C+D=15000*3$

Solving we get,

=> D−A = 3000 * 3

             = 9000

Also, D = 2 A

Then,

D= 18000 and

A = 9000

∴ Average salary of B and C

$=\frac{45000-18000}{2}$

= Rs. 13500

Option C. is the answer