Find the principal on amount 11,800 at 6% per annum for 3 years being simple
interest annually.
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Answer:
⇒ Here, we have T=3years,R=5% and S.I.=Rs.600
⇒ S.I.=
100
P×R×T
⇒ 600=
100
P×5×3
∴ P=
5×3
600×100
=Rs.4000.
⇒ Now, taking P=Rs.4000,T=3years and R=5%
⇒ A=P(1+
100
R
)
T
⇒ A=4000×(1+
100
5
)
3
⇒ A=4000×(
20
21
)
3
⇒ A=
8000
4000×9261
=Rs.4,630.50
∴ The required amount is Rs.4,630.50
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