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Byju's Answer
Standard VIII
Mathematics
Formula for CI
Find the comp...
Question
Find the compound interest Tanuj got from a company on his fixed deposit of Rs.
8000
after
9
months at
20
%
per annum if the interest is payable quarterly.
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Solution
Given principal,
P
=
8000
Rate
R
=
20
%
=
20
4
=
5
%
Time
=
9
months
=
3
quarters
So, Amount
=
P
⎛
⎜ ⎜ ⎜
⎝
1
+
R
4
100
⎞
⎟ ⎟ ⎟
⎠
4
n
=
8000
⎛
⎜ ⎜ ⎜
⎝
20
4
100
⎞
⎟ ⎟ ⎟
⎠
4
n
=
800
(
1
+
20
400
)
3
=
8000
(
1
+
1
20
)
3
=
8000
×
21
20
×
21
20
×
21
20
=
9261
Compound Interest
=
A
−
P
=
(
9261
−
8000
)
=
R
s
1261
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