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Question
Raj borrows Rs.8,000; out of which Rs. 4500 at 5% and the remainder at 6%. Find the total interest paid by him in 4 years.
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Solution
Total sum borrowed by Raj = Rs.8000
In the First Case :
P = Rs.4500
R = 5%
T =4 years
S.I. =`("P"xx"R"xx"T")/100`
= Rs.`(4500xx5xx4)/100`
= Rs.900
In the Second Case :
p = Rs.8000 − Rs.4500
= Rs.3500
R = 6%
T = 4 years
S.I. =`("P"xx"R"xx"T")/100`
= Rs. `(3500xx6xx4)/100`
= 35 × 6 × 4 = Rs.840
Total interest paid by Raj
= Rs.900 + Rs.840
= Rs.1740
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