Correct Answer - Option 2 : 72000
Given:
The ratio between the monthly income of husband and wife working in the IT sector is 9:8 and the ratio of their individual expenditure is 8 : 7
Calculation:
Let be assume the monthly salary of husband and wife is 9x and 8x respectively and expenditure 8y and 7y respectively
⇒ 9x - 8y = 9000 .... (1)
⇒ 8x - 7y = 9000 .... (2)
⇒ x = 9000
⇒ Salary of wife's = 8x = 8 × 9000 = 72000
∴ The required result will be 72000.