The total income of Mr. Teng in the years 2003, 2004, and 2005 was BDT 36,400. His income had increased by 20% each year. What was his income (BDT) in 2005?
Explanation: ধরি, 2003 সালে income ছিল \(x\), 2004 সালে \(1.2x\) এবং 2005 সালে \(1.44x\) টাকা। তাহলে total income হল \((x + 1.2x + 1.44x) = 3.64x\) টাকা। দেয়া আছে, total income 36,400 টাকা। অতএব, 2005 সালে income ছিল = \((1.44x/3.64x) \times 36400 = 14,400\) টাকা। (None of these).
