Subject
Bank Exam
Topic
Prime Bank Ltd. MTO 2013
Arman wanted to have Tk. 39,200 as interest after 5 years. He has invested an amount in an account for 1 year at 8% interest rate. From the 2ndyear he invested the principal amount in another account offering 10% interest for 3 years. At the beginning of the fifth year he invested the principal amount in another account at rate of 11%. What was the principal amount? (assume simple interest rate)
Arman wanted to have Tk. 39,200 as interest after 5 years. He has invested an amount in an account for 1 year at 8% interest rate. From the 2ndyear he invested the principal amount in another account offering 10% interest for 3 years. At the beginning of the fifth year he invested the principal amount in another account at rate of 11%. What was the principal amount? (assume simple interest rate)
ক)
Tk. 50,000খ)
Tk. 80,000গ)
Tk. 90,000ঘ)
Tk. 70,000Explanation
মনে করি, Principal = P Now, 8% এ interest = P x 1 x 0.08 = 0.08P 10% এ interest = P x 3 x 0.10 = 0.30P 11% এ interest = P x 1 x 0.11 = 0.11P Now, 0.08P + 0.3P + 0.11P = 39200 ⇒ P = 39200/0.49 = 80000Related questions
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