The sum of interest on Rs 2000 at the rate of 6% per annum for 2 1/2 years and 2 years is ---------
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Answer:
Given, P= Rs. 2000, r
1
=4% p.a. for 1
st
year, r
2
=3% p.a. for 2
nd
year
∴A=P(1+
100
r
1
)(1+
100
r
2
)
=2000(1+
100
4
)(1+
100
3
)
= Rs. (2000×
25
26
×
100
103
)= Rs. 2142.40
∴ C.I. = Rs. 2142.40− Rs. 2000= Rs. 142.40
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