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মিলন 5,600 টাকার কিছু টাকা 5% সরল মুনাফায় এবং অবশিষ্ট টাকা 4% সরল মুনাফায় বিনিয়োগ করে। সে এক বছরের 256 টাকা মুনাফা পেলে 4% হারে কত টাকা বিনিয়োগ করেছিল?
2,500 টাকা
2,400 টাকা
2,600 টাকা
3,200 টাকা
ANSWER : 2
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<div style = "font - family: inherit;"> <div class = "" dir = "auto" style = "font - family: inherit;"> <div id = "jsc_c_o" class = "ecm0bbzt hv4rvrfc e5nlhep0 dati1w0a" style = "padding: 4px 16px; font - family: inherit;" data - ad - comet - preview = "message" data - ad - preview = "message"> <div class = "j83agx80 cbu4d94t ew0dbk1b irj2b8pg" style = "flex - direction: column; margin - bottom: - 5px; margin - top: - 5px; display: flex; font - family: inherit;"> <div class = "qzhwtbm6 knvmm38d" style = "margin - top: 5px; margin - bottom: 5px; font - family: inherit;"> <div class = "o9v6fnle cxmmr5t8 oygrvhab hcukyx3x c1et5uql ii04i59q" style = "overflow - wrap: break - word; margin: 0.5em 0px 0px; white - space: pre - wrap; font - family: inherit;"> <div dir = "auto" style = "font - family: inherit;">ধরি,</div> <div dir = "auto" style = "font - family: inherit;">5% সরল মুনাফায় বিনিয়োগ করে = X টাকা</div> <div dir = "auto" style = "font - family: inherit;">4% .................................... = (5600 - X) টাকা</div> <div dir = "auto" style = "font - family: inherit;">5% হারে x টাকার মুনাফা = 5*X/100 টাকা</div> <div dir = "auto" style = "font - family: inherit;"> = x/20 টাকা</div> <div dir = "auto" style = "font - family: inherit;">4% হারে (5600 - x) x টাকার মুনাফা = 4*(5600 - x)/100 টাকা</div> <div dir = "auto" style = "font - family: inherit;"> = 5600 - x/25 টাকা</div> <div dir = "auto" style = "font - family: inherit;">শর্তমতে,</div> <div dir = "auto" style = "font - family: inherit;">x/20 + 5600 - x/25 = 256</div> <div dir = "auto" style = "font - family: inherit;">বা, 25x + 4(5600 - x)/100 = 256</div> <div dir = "auto" style = "font - family: inherit;">বা, 5x + 22400 - 4x = 25600</div> <div dir = "auto" style = "font - family: inherit;">অতএব, x = 3200</div> <div dir = "auto" style = "font - family: inherit;">4% হারে বিনিয়োগ করে = (5600 - 3200) টাকা</div> <div dir = "auto" style = "font - family: inherit;"> = 2400 টাকা</div> </div> </div> </div> </div> </div> </div> <div style = "font - family: inherit;"> <div class = "stjgntxs ni8dbmo4 l82x9zwi uo3d90p7 h905i5nu monazrh9" style = "border - radius: 0px 0px 8px 8px; 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