Question

What is the rate percent when Rs.21.25 is the simple interest on Rs.425 of 2 years 6months?

Answer 1

Given:-

•Principal = 425 rupees

• Simple Interest = 21.25 rupees

•Time = 2years 6 months

To Find:-

•Rate percent = ?

Solution:-

Here,

• P = 425 rupees
• T = $\sf2\dfrac{6}{12}$ = $\dfrac{5}{2}$ years
• S.I = 21.25 rupees

As we know，

$\: \: \sf \: rate = \frac{simple \: interest \times 100}{principal \times time}$

Now substitute the values

$\: \: \sf \: rate = \frac{21.25 \times 100 \times 2}{425 \times 5} \\ \\ \: \: \sf \: rate = \frac{2125 \times 100 \times 2}{425 \times 5 \times 100} \\ \\ \: \: \sf \: rate = 2 percent$

Hence,rate percent is 2%.

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