The ratio of the income of A to that of B is 5 : 7. A and B save Rs 4000 and Rs 5000 respectively. If the expenditure of A is equal to 
of the expenditure of B, then the total income of A and B is ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 ie Rs 24,000.
Explanation:
Income ratio = 5 : 7 = 10 : 14
Expenditure = 2 : 3 = 6 : 9
Savings = 4 : 5 = 4 : 5
k = 1000
(10 + 14) × k = 24 × 1000 = Rs 24000