Question : The ratio of the incomes of two employees is 7 : 4, and the ratio of their expenditures is 3 : 1. If each of them manages to save INR 4800 per month, find the sum of their monthly incomes (in INR).
Option 1: 21120
Option 2: 20120
Option 3: 21150
Option 4: 18150
Correct Answer: 21120
Solution :
Given: The ratio of the incomes of two employees is 7 : 4, and the ratio of their expenditures is 3 : 1. Each of them manages to save INR 4,800 per month.
Let their income be $7x, 4x$ and their expenditure be $3y, y$.
According to the question,
$7x-3y=4800$..........................(1)
$4x-y=4800$.........................(2)
Solving equations (1) and (2) we get,
$x=1920$ and $y=2880$
So, the sum of their monthly income $= (7x+4x) = 11x = 11×1920 = 21120$
Hence, the correct answer is 21120.
Related Questions
Know More about
Staff Selection Commission Combined Grad ...
Result | Eligibility | Application | Selection Process | Preparation Tips | Admit Card | Answer Key
Get Updates Brochure
Your Staff Selection Commission Combined Graduate Level Exam brochure has been successfully mailed to your registered email id “”.
Upcoming Exams
Trending Articles around SSC CGL
