Correct Answer: Option D
Let the principal amount be ‘P’
We know that, S I = Pnr /100
Then, P × 12 × 3.5/100 – P × 8.5 × 3.5/100 = Tk.189.875
42P/100 – 29.75P/100 = 189.875
12.25P = 189.875 × 100 = 18987.5
P = 18987.5/12.25 = Tk.1550.
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