Compound interest on a certain sum for 2 years at 10% per annum is Tk. 420.What would be the simple interest at the same rate and for the same time?

Created: 2 months ago | Updated: 3 weeks ago

Tk. 100

Tk. 200

Tk. 300

Tk. 400

Job Solution Combined Bank (সমন্বিত ব্যাংক) Sonali Bank Ltd Officer (Cash) 27.04.2018 গণিত

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Let, the principal = x,

C = p( $1 + r)^{n}$

$\Rightarrow$ x+420=x(1+ $\frac{10}{100})^{2}$

$\Rightarrow$ x+420=1.21x

$\Rightarrow$ x=2000

Time, t = 2 years and Rate, r = 10%

We know, I = pnr=2000 $\times$ 2 $\times$ $\frac{10}{100}$ =400

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Job Solution Combined Bank (সমন্বিত ব্যাংক) অফিসার (ক্যাশ) নিয়োগ পরীক্ষা- ১২-১০-২০১৮ গণিত

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Job Solution Combined Bank (সমন্বিত ব্যাংক) Sonali & Janata Bank | Officer (IT)| 04.01.2019 গণিত

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Compound interest on a certain sum for 2 years at 10% per annum is Tk. 420.What would be the simple interest at the same rate and for the same time?

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