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Dhana Lakshmi

· started a discussion

· 1 Months ago

Exam (Question:232095.0)

Can I retake the exam

Question:
Given that, 10% of A's income = 15% of B's income = 20% of C's income. If sum of their incomes is Rs. 7800, then B's income is: 
Options:
A) Rs. 3600
B) Rs. 3000
C) Rs. 2400
D) Rs. 1800
Solution:
Ans: (c) According to the question, 

10A = 15B = 20C 


A : B : C = 300 : 200 : 150 

A : B : C = 6 : 4 : 3 

(6 + 4 + 3) units     = Rs 7800 

13 unit                    = Rs 7800

1 unit                      = Rs 600

4 units                     = Rs 600 × 4 

                               = Rs 2400

Knowledge Expert

· commented

· 1 Months ago

Dear student,
One mock tests can be only attempted once.
Keep learning,
Team TR
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