Ratio of the monthly income of A to B is 4:3 and the ratio of the monthly income of B to C is 2:1. If the difference between

Q. Ratio of the monthly income of A to B is 4:3 and the ratio of the monthly income of B to C is 2:1. If the difference between the C’s monthly income and his savings is Rs.12000 and the saving’s of C is half of his expenditure, then what is the average of the income of A, B and C?

1. Rs.34000
2. Rs.31000
3. Rs.27000
4. Rs.29000
5. None of these

Ans: Rs.34000

Sol:

C’s income = x
Expenditure = y
Savings = s
x = y + s
y + s – s = 12000
y = 12000
Savings = 12000 * 1/2 = 6000
x = 12000 + 6000 = 18000
B’s income = 2/1 * 18000 = 36000
A’s income = 4/3 * 36000 = 48000
Average income of A, B and C = (48000 + 36000+18000)/3 = 34000