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6.Interest
medium
In what time (In $years$) will ₹ $8,000,$ at $3 \%$ annum, produce the same interest as ₹ $6,000$ does in $5$ years at $4 \%$ simple interest?
A
$3$
B
$4$
C
$5$
D
$6$
Solution
(c) S.I. $=\frac{6000 \times 4 \times 5}{100}=₹ 1200$
New $P=₹ 8000$
$R=3 \%$
New S.I. $=1200 ₹$
$\begin{array}{l}\text { S.I. }=\frac{P N R}{100} \\\text { 1200 }=\frac{8000 \times N \times}{100} \\\hline N=5 \text { , years. }\end{array}$
Standard 13
Quantitative Aptitude
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