SSC MTS 6 Aug 2019 Shift 1 Paper

Let the monthly expenditures A and B be 5x and 3x.
⇒ Saving of A = Saving of B
⇒ 12000 - 5x = 8000 - 3x
⇒ 2x = 4000
⇒ x = 2000
⇒ Now saving of A = 12000 - 5x = 12000 - 10000 = Rs. 2000
⇒ Now saving of B = Rs. 2000
∴ A and B save Rs. 2000 per month.