SSC GD 2021 PYQ — Question 55

SSC GD Constable (English) - 17th November 2021 Shift 2 • Quantitative Aptitude • Q55

The ratio of the incomes of A and B is 4 : 5 and the ratio of their expenditures is 2 : 3. If A and B save ₹ 7,200 and ₹ 6,000, respectively, then the income (in ₹) of A is:

Show answer & explanation

Correct answer: A

Explanation

The correct answer is option 1 i.e. 19,200.

Given:

The ratio of the incomes of A and B is 4 : 5 end the ratio of their expenditures is 2 : 3. If A and B save ₹ 7,200 and ₹ 6,000

Formula used:

Savings = Income - expenditure

Calculations:

Let the income of A and B be 4x and 5x

According to the question

⇒ (4x - 7200)/(5x - 6000) = 2/3

⇒ 12x - 21600 = 10x - 12000

⇒ 2x = 9600

⇒ x = 4800

Income of A = 4x = 4 × 4800 = 19200