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Standard VII

Mathematics

Interest

Mannu investe...

Question

Mannu invested an amount of $R s . 14800$ at the rate of $7 %$ per annum. After how many years will she obtain a simple interest of $R s . 15800$ ?

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Solution

$\begin{matrix} W e k n o w t h a t I = \frac{p r t}{100} f o r m t h e g i v e n i n f o r m a t i o n 15800 = \frac{14800 \times T \times 6}{100} T = \frac{15800}{148 \times 6} = 17.79 y e a r s . \end{matrix}$

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Mannu invested an amount of Rs.14800 at the rate of 7% per annum. After how many years will she obtain a simple interest of Rs.15800?

WeknowthatI=prt100formthegiveninformation15800=14800×T×6100T=15800148×6=17.79years.

Mannu invested an amount of $R s . 14800$ at the rate of $7 %$ per annum. After how many years will she obtain a simple interest of $R s . 15800$ ?

$\begin{matrix} W e k n o w t h a t I = \frac{p r t}{100} f o r m t h e g i v e n i n f o r m a t i o n 15800 = \frac{14800 \times T \times 6}{100} T = \frac{15800}{148 \times 6} = 17.79 y e a r s . \end{matrix}$