Subject
Bank Exam
Topic
National Bank Ltd. PO 2013
A person invested 2/3rd of his capital at 3%, 1/6th at 6% and the remainder at 12%. If his annual income is Tk. 25, then the capital is
A person invested 2/3rd of his capital at 3%, 1/6th at 6% and the remainder at 12%. If his annual income is Tk. 25, then the capital is
ক)
Tk.490খ)
Tk. 510গ)
Tk. 500ঘ)
Tk. 510Explanation
If capital is x, Income from 2/3rd is = (2x*0.03/3) Income from 1/6th is = (x*0.06/6) Income from rest or (1- 2/3 - 1/6) or, 1/6th is = (x*0.12/6) Now, (2x*0.03/3) + (x*0.06/6) + (x*0.12/6) = 25 or, 6x/300 + 6x/600 + 12x/600 = 25 or, (12x+6x+12x) / 600 = 25 or, 30x = 25*600 or, x = 25*600/30 or, x = 500Related questions
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