Question

Mita got Rs 250 as interest investing Rs 500 in 4 years . Sita got Rs 200 as interest investing Rs 400 in 5 years.,Hence sita got better rate of interest.​

Answer 1

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➲Given :

....

$\Longrightarrow\sf{1st \: condition}$

➲ 500 rs invested for 4 years and get 250 as interest..

• money = 500
• year = 4
• intrest = 250

....

$\Longrightarrow \bf{i \: = \frac{prn}{100} }$

$\Longrightarrow \bf{250 = \frac{500 \times 4 \times r}{100} }$

$\Longrightarrow \bf{r = \frac{250 \times 100}{500 \times 4} }$

$\Longrightarrow \bf{r = 12.5}$

...

$\Longrightarrow \bf{2nd \: condition}$

➲ 400 rs is invested for 5 years and get 200 rs as intrest

• money = 400
• year = 5
• interest = 200

....

$\Longrightarrow \bf{i \: = \frac{prn}{100} }$

$\Longrightarrow \bf{200 = \frac{400 \times 5 \times r}{100}}$

$\Longrightarrow \bf{r = \frac{200 \times 100}{400 \times 5}}$

$\Longrightarrow \bf{r = 10}$

..

$\large{ \dag} \bf \red {Mita \: is \: got \: batter \: rate} \\ \large \bf \red{ \: of \: intrest \: than \: sita}$

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