a certain
sum amount ₹ 21,600 in 2 years
and ₹ 31104in 4 years
at the same rate compounded annually find the sum and
rate
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4
Answer:
answer is
Step-by-step explanation:
Sum after 2 years=Rs.5292
Sum after 3 years =Rs.5556.60
Interest for onr year =5556.60−5292=Rs.264.60
C.I for 1 year=S.I for 1 year
Interest=
100
PRT
⇒264.60=
100
5292×R×1
⇒R=
5292
264.60×100
=5%
Let the sum=Rs. x
Amount =Rs.5292, Time 2 years, R=5%
Amount=P(1+
100
R
)
t
⇒5292=x(1+
100
5
)
2
⇒5292=x×
100
105
×
100
105
⇒x=
105×105
5292×100×100
=Rs.4800
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