Geography, asked by yneetu, 1 year ago

please solve the question

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Answered by aditya2253812

$correct \: answer \\ a)20 \: years \\ \\ description \: for \: correct \: answer \\ let \: principal \: = 10p \\ \\ interest = 10p \times \frac{30}{100} = 3p \\ \\ according \: to \: the \: question \\ \\ case \: 1 \\ 3p = \frac{10p \times r \times 6}{100} = r = 50% \\ \\ case \: 2 \\ interest = principal = 10p \\ 10p = \frac{10p \times 5 \times t}{100} \\ \\ t = 20yearss$

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Answered by tirth36352

Answer:

(B) 20years...........

Hope it help you so please make me brainlist...

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