Question

9. Govind borrows 18,000 at 10% simple
interest. He immediately invests the money
borrowed at 10% compound interest
compounded half-yearly. How much money
does Govind gain in one year ?
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Answer 1

Answer:

hope this will help you so much

Step-by-step explanation:

Sum=Rs.18000

Rate =10%

Time =1 year

S.I=100PRT

⇒10018000×10×1=Rs.1800

Govind invest the sum at 10% compound interest half-yearly 

Then amount after 1 year

R=10% half-yearly=210=5%

Time =1 year=2 half year

amount=P(1+100R)T

⇒18000(1+1005)2

⇒18000×100105×100105 

⇒Rs.19845

C.I=amount−Sum

=19845−18000=Rs.1845

Difference between C.I  and S.I=1845−1800=Rs.45

Hence Govind gain Rs.45 in a year