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Standard VII
Mathematics
Simple Interest
A Man lends R...
Question
A Man lends Rs. 1540 for five years and Rs. 1800 for four years. If he gets Rs. 1788 as interest on both amounts, what is the rate of interest ?
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Solution
Let the rate of interest peer annum be
r
%
Then According to question ,
r
100
×
(
1540
×
5
+
1800
×
4
)=
1788
Solving we get
r
=
12
%
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