Question

calculate the amount if rupees 18000 is invested at 20% per annum compounded half yearly for 1 year​

Answer 1

Step-by-step explanation:

Amount= principal (1+r/100)^n

=18000(1+20/100)^1

=18000(120/100)^1

= 18000×120/100

=21600

compound interest = A-P

= 18000-21600

= 3600ans

Answer 2

Answer:

$amount = p \times(1 + \frac{r}{2 \times 100} )^{2t} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 18000 \times (1 + \frac{20}{2 \times 100} )^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: =18000 \times (1 + \frac{1}{10} ) ^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 18000 \times ( \frac{10 + 1}{10} ) ^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 18000 \times( { \frac{11}{10}) }^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 18000 \times \frac{121}{100} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 180 \times 121 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 21780$

Step-by-step explanation:

Hope it helps u❤

plz mark my answer brainliest☺