A sum of Tk. 1600 is invested at 15% simple interest per annum for 10 months. What will be the interest?

Question: A sum of Tk. 1600 is invested at 15% simple interest per annum for 10 months. What will be the interest?

Solution:
দেওয়া আছে,
আসল, P = Tk. 1600
সুদের হার, r = 15%
সময়, n = 10 months = 10/12 year = 5/6 year

আমরা জানি,
সুদ (I) = Pnr/100
= 1600 × (5/6) × 15/100
= (16 × 5 × 15)/6
= 1200/6
= 200 Taka

∴ 10 মাসে মোট মুনাফা হবে 200 টাকা।