# NIELIT 2019 Feb Scientist D - Section C: 20

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$5\%$ income of $A$ is equal to $15\%$ income of $B$ and $10\%$ income of $B$ is equal to $20\%$ income of $C$. If income of $C$ is ₹ $2000$, then total income of $A, B$ and $C$ (in rupees) is :

1. $6000$
2. $9000$
3. $12000$
4. $18000$

.05A = .15B

.1B = .2C where C = Rs.2000

B = (.2*2000)/.1 = Rs.4000

A = (.15*4000)/.05 = Rs.12000

Total income of A,B and C = 2000 + 4000 + 12000 = Rs.18000

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