Principal = Rs.16,000;
Time=9 months = 3 quarters;
Amount
=Rs.[16000x(1+5/100)³] =[16000x21/20x21/20x21/20]
= Rs.18522.
C.I
= Rs.(18522 - 16000)
= Rs.2522.
C.I. when interest compounded yearly
=Rs.5034
C.I. when interest iscompounded half-yearly
= Rs. 5306.04
Difference = Rs. (5306.04 - 5304) = Rs. 2.04
Amount = Rs. (30000 + 4347) = Rs. 34347.
Let the time be n years.
Then, 30000*(1+7/100)^n=34347
n= 2 years
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