Raju lent Rs. 400 to Ajay for 2 years and Rs. 100 to Manoj for 4 years and received together from both Rs. 60 as interest. Find the rate of interest, simple interest being calculated.
A. 5% B. 6% C. 8% D. 9% Answer: Option AShow Answer
Solution(By Apex Team)
$\begin{array}{l}\text{Let rate is R%}\\
\text{According to the question,}\\
\begin{array}{l}
{\left[\frac{400 \times 2 \times R}{100}\right]+\left[\frac{100 \times 4 \times R}{100}\right]=60} \\
8 R+4 R=60 \\
\text { Hence, } R=5 \%
\end{array}\end{array}$
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