Ashifur August 8, 2023 - 20:04
Problem: If the sum of interests on Tk. 500 in 4 years and Tk. 600 in 5 years is Tk. 500 then what will be the interest on Tk.1000 in 3 years?

View all: JANATA BANK OFFICER (IT) | WRITTEN QUESTION (MATH) SOLVE | 2016

Correct Answer: The amount of interest in 3 years is 300 Tk.

Explanation:

Sum of money is = (500 x 4) Tk. + (600 x 5) Tk.

= 2,000 Tk. + 3,000 Tk.

= 5,000 Tk.

Interest of Tk. 5,000 is Tk. 500

Interest of Tk. 100 is Tk. = $\frac{500\times 100}{5000}$= 10%

We know, interest = $\frac{Rate\times Capital\times Time}{100}$

= $\frac{10\times1000\times3}{100}$ = 300 TK.

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