Correct Answer: Option E
Let ‘r1’ and ‘r2’ be the two rates of interest.
Then, S I = P r n/100
So, SI1 = 1500 × 4 × r1/100 = 60r1
And S I 2 = 60r2
Given, SI1 – SI2 = Tk.75
i.e. 60r1 – 60r2 = 75
60(r1 – r2) = 75
So, (r1 – r2)= 75/60 =5/4
= 1.25%
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