self Maths Puzzle

Find compound interest on Rs. 10000 at 10% p.a. for 4 years, if interest is compounded annually.

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self Other Question

. The average marks obtained by some students in an examination is 54. If 20% of the students got a mean score of 90 marks and the 30% of the students got a mean score of 20. Find the average marks of the remaining students. A man invested Rs. 16000 at compound interest for 3 years, interest compounded annually. If he got Rs. 18522 at the end of 3 years, what is rate of interest?