A person invested 2/3 th of his capital 3%, 1/6th at 6% and the remainder at 12%. If his annual income is Tk. 25, then the capital is

A person invested 2/3 th of his capital 3%, 1/6th at 6% and the remainder at 12%. If his annual income is Tk. 25, then the capital is Correct Answer Tk. 500

We have, 1a = 23,1b = 16,1c = 1 - 23 + 16 = 16R1 = 3%,R2 = 6%,R3 = 12%∴A = 25 Tk.Capital = A×100R1a + R2b + R3c = 25×1003×23 + 66 + 126 = 25005 = 500
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৪ঃ ৫= ১২ঃ x হলে x -এর মান কত হবে?
চারটি সমানুপাতিক রাশির প্রান্তীয় রাশি দুটির গুনফল ২০০। প্রথম রাশিঃ দ্বিতীয় রাশি= ১ঃ২, দ্বিতীয় রাশিঃচতুর্থ রাশি= ১ঃ৪। তৃতীয় রাশিটি কত?
কঃখ= ১ঃ২ এবং খঃগ = ৩ঃ৪ হলে কঃখঃগ কতো?