Byju's Answer
Standard IX
Mathematics
Finding CI When Rate Compounded Annually
At what inter...
Question
A
3%
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B
4%
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C
5%
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D
6%
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Solution
The correct option is B 4%
Amount = Principal + Interest = Rs 676
Also,
A=P[1+r100]n
⇒676=625[1+r100]2
⇒676625=[1+r100]2
⇒2625=1+r100
⇒r=4
Thus, rate of interest = 4%.
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