the ratio of incomes of Amar and Komal is 5 : 4 and the ratio of their expenditure is 2 : 1. If each of them saves ₹6,000 per month, find Amar's income.

Correct option is A

Given:

Ratio of income of Amar and Komal is 5 : 4

Ratio of expenditure of Amar and Komal is 2 : 1

They both saves 6000 Rupees

Solution:

Let the income of Amar and  Komal be 5x and 4x

Let the expenditure of Amar and Komal be 2y and y.

Now,

Savings = Income - Expenditure 

Amar's savings => 5x – 2y = 6000      ----(1)  

Komal's savings => 4x – y = 6000       ----(2)

Solving both equations, we get

=> x = 2000 and y = 2000

Amar’s income = 5x = 10000

Hence, option (a) is the correct answer.