A sum of money becomes Rs. 1100 in 2 years an | vedclass

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(A) The difference in the total amount over the time interval is $1400 - 1100 = Rs. 300$.The difference in time is $6 - 2 = 4$ years.Since the interes

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$7 \frac{17}{19} \%$

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(A) The difference in the total amount over the time interval is $1400 - 1100 = Rs. 300$.The difference in time is $6 - 2 = 4$ years.Since the interest is $S.I.$,the interest for $1$ year is $\frac{300}{4} = Rs. 75$.For $2$ years,the total $S.I.$ is $75 	imes 2 = Rs. 150$.The principal $P$ is calculated as $Amount - S.I. = 1100 - 150 = Rs. 950$.The rate of interest $R$ is given by $\frac{S.I. 	imes 100}{P 	imes T} = \frac{75 	imes 100}{950 	imes 1} = \frac{7500}{950} = \frac{150}{19} = 7 \frac{17}{19} \%$.

$A$ sum of money becomes $Rs. 1100$ in $2$ years and $Rs. 1400$ in $6$ years at $S.I.$ Find the rate percent.

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