A steno- typist deposits Rs 10000 in a bank for a period of 3 years at 12 % per annum compound interest . The interest accrued to her after maturity will be

byAmlesh Mahato •March 27, 2021

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Solution:

⇨Given

⇨ p = 10000

⇨ r = 12%

⇨ n = 3 years

⇨The interest accrued to her after maturity will be

$\large C.I=p\left \{ \left ( 1+\frac{r}{100} \right )^{n}-1 \right \}$

$\large \Rightarrow C.I=10000\left \{ \left ( 1+\frac{12}{100} \right )^{3}-1 \right \}$

$\large \Rightarrow C.I=10000\left \{ \left (\frac{100+12}{100} \right )^{3}-1 \right \}$

$\large \Rightarrow C.I=10000\left \{ \left (\frac{112}{100} \right )^{3}-1 \right \}$

$\large \Rightarrow C.I=10000\left \{\frac{1404928}{1000000}-1 \right \}$

$\large \Rightarrow C.I=10000\left \{\frac{1404928-1000000}{1000000} \right \}$

$\large \Rightarrow C.I=10000\left \{\frac{404928}{1000000} \right \}$

$\large \Rightarrow C.I=\frac{404928}{100}$

$\large \Rightarrow C.I=4049.28$ Rs

Tags: Math-Class-8