Question

8. Calculate the compound interest that Gokul Chand will get by investing 1000 for 3 years at the rate of 10% per annum

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Answer 1

USE THE ATTACHED FORMULA MATE...

Answer 2

$\underline{ \underline{ \Large \sf { \pink{question:)}} } }$

Gokul borrowed rupees 1000 at 10% per annum at compound interest for 3 years from a bank if he paid rupees 600 at the beginning of the third year what will be the principal for the last year?

$\underline{\underline{\maltese\:\:{\mathfrak{solution \: in \: short \: ( : }}}}$

• Here, P = ₹ 1000
• Rate = 10 %

$\blue{\therefore \rm \: amount \: after \: 2 \: years : - }$

$\implies \rm1000 {(1 + \frac{10}{100} )}^{2} \\ \\ \implies \rm \: 1000 \times { (\frac{11}{10} }^{2} ) \\ \\ \implies \rm \frac{1000 \times 121}{100} \\ \\ \rm \implies \: rs = 1210$

Since at the beginning of the third year rupees 600 were refunded...

⠀

= Remaining n = 1210-600= ₹610

$\sf= Principal \: for \: the \: 3rd \: year = \red{ ₹610}$

610 is the answer :p