Subject
Quantitative Aptitude
Topic
Interest
. A certain sum of money amounts to Tk.756 in 2 years and to Tk.873 in 3 ½ years at a certain rate of simple interest. The rate of interest per annum is---
. A certain sum of money amounts to Tk.756 in 2 years and to Tk.873 in 3 ½ years at a certain rate of simple interest. The rate of interest per annum is---
ক)
10%খ)
11%গ)
12%ঘ)
13 %Explanation
Given, the amount for 2 years =Tk.756 The amount for 3 ½ years = Tk.873 Therefore, S I for 1 ½ years = 873 – 756 = Tk.117 Therefore, S I for 2 years = 117 / 1 ½ × 2 = 117 × 2 × 2/3 = Tk.156 Therefore, the Sum = Tk.756 – 156 = Tk.600. So, the rate per cent =( SI ×100)/Pn = 78 × 100/600 × 1 = 78/6 = 13%.Related questions
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