At the rate of 8% simple interest, a sum of Tk. 2800 will earn how much interest in 2 years 6 months?

Question: At the rate of 8% simple interest, a sum of Tk. 2800 will earn how much interest in 2 years 6 months?

Solution:
Given,
Principal, P = 2800 Tk.
Rate of interest, r = 8% = 8/100 = 2/25.
Time, n = 2 years 6 months
⇒ n = 2 + (6/12) years
∴ n = 5/2 years.

We know,
I = Pnr
= 2800 × (5/2) × (2/25)
= 560 Tk.
Simple Interest Tk. 560.