Question

9) At what rate of principal of 4,000
are put for 3 years, so as to get 1,320
as interest on maturity?​

Answer 1

$\huge\boxed{\underline{\mathcal{\red{❥A}\green{N}\pink{S}\orange{W}\blue{E}\purple{R}}}}$

Sea water is a mixture of salts and water which cannot be separated except by evaporation. Therefore, sea water is considered homogeneous.

Sea water also contains mud, decayed plant, etc., other than salts and water, so it is heterogeneous also.

Answer 2

Explanation:

${ \huge{ \texttt{ \fcolorbox{lightblue}{black}{Aɳʂɯҽr}}}}$

Let the principal at the end of first year be Rs. x.

Then

$\sf \frac{x×10×1}{100} = 1320$

Now, let the original principal be Rs. P.

Then, the amount after 1 year =

$\sf{p + \frac{P×10×1}{100} = \frac{11P}{10}}$

$\sf{ \frac{11P}{10} =1370}$

$\sf \: p = \frac{13200×10}{11} = 12000$

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@MɪssSᴘᴀʀᴋʟɪɴɢ♥️