Raju lent Rs. 400 to Rakesh for 2 years and Rs. 100 to Rohan for 4 years and received from both Rs. 60 as collective interest. Find the rate of simple interest being calculated.

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Solution

The correct option is A
According to the question
$\frac{R \times 400 \times 2}{100} + \frac{R \times 100 \times 4}{100} = 60$
$\Rightarrow 12 R = 60 ∴ R = \frac{60}{12} = 5 %$

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Raju lent Rs. 400 to Rakesh for 2 years and Rs. 100 to Rohan for 4 years and received from both Rs. 60 as collective interest. Find the rate of simple interest being calculated.

The correct option is A According to the question R×400×2100+R×100×4100=60 ⇒12R=60∴R=6012=5%

The correct option is A
According to the question
$\frac{R \times 400 \times 2}{100} + \frac{R \times 100 \times 4}{100} = 60$
$\Rightarrow 12 R = 60 ∴ R = \frac{60}{12} = 5 %$