SSC MTS 5 Aug 2019 Shift 3 Paper

Interest for first year = 2000 × 10% = 200
⇒ Interest for second year = (2000 + 200) × 10% = 220
⇒ Interest for third year = (2000 + 200 + 220) × 10% = 242
⇒ But interest for 6 months in third year = Interest for third year/2 = 242/2 = 121
⇒ Total interest in 30 months = Interest for first year + Interest for second year + interest for 6 months in third year
⇒ Total interest in 30 months = 200 + 220 + 121 = Rs. 541
⇒ The amount after 30 months = 2000 + 541 = Rs. 2541
∴ The amount will be Rs. 2541 after 30 months.