Question

let us determine the rate of simple interest in percent per annum if the interest of Rs 500 in 4yrs is Rs 100
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Answer 1

$\large\mathbb \blue{\fcolorbox{blue}{black}{ \ HERE IS YOUR ANSWER\ }} \\ \large \green{ \fcolorbox{gray}{black}{ \: \textbf{⛬ ƜЄ ƘƝƠƜ :}}} \\ ꜱɪᴍᴘʟᴇ ɪɴᴛᴇʀᴇꜱᴛ = p \: x \: t \: x \: r /100 \\ \large \green{ \fcolorbox{gray}{black}{ \: \textbf{⛬ ƜЄ ƇƛƝ ƧƲƁƧƬƖƬƲƬЄ :}}} \\ 100 = 500 \times 4 \times r / \: 100 \\ = 100 \times 100 = 500 \times 4 \times r \\ 10000 = 2000 \times r \\ = 10000/2000 \times r \\ = 10/2 = r \\ = 5 = r$

$\boxed{\orange{\bf{⛬ ᴡᴇ \: ᴄᴀɴ \: ꜱᴀʏ \: ᴛʜᴀᴛ \: ᴛʜᴇ \: ɪɴᴛᴇʀᴇꜱᴛ \: ɪꜱ \: 5 \: ᴘᴇʀᴄᴇɴᴛ...✓}}}$

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