9. Find the CI at the rate of 14% per
annum for 1 year on a sum of 12,000
compounded half-yearly.
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3
Answer:
Sum (p)=Rs.12000
Rate of interest =14% per annum
Time =1 year
Since the interest is compounded half yeary.
Therefore,
R=
2
14
=7%
n=2
Therefore,
A=P(1+
100
R
)
n
⇒A=12000(1+
100
7
)
2
⇒A=
100×100
12000×107×107
=Rs.13738.8
Therefore,
Compound interest =A−P
=13738.8−12000
=Rs.1738.8
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