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.