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Doctors Medicines MCQs Q&A

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Let, Tk. X is the additional money Mrs. Barbara invests at 8% interest

∴ Her total investment = (x + 2,400) Tk.

According to the question,

(2,400 × 5%) + (x × 8% ) = (2,400 + x) × 6% ⇒ 120 + 8x100 = 2400 + x × 6100 ⇒120 + 8x100 = 144 + 6x100 ⇒8x100 - 6x100 = 144 - 120 ⇒ 2x100 = 24 ⇒ x50 = 24 

∴ x = 1200 টাকা ans.

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