Question

find the compound interest principal is 2800 and rate 10% time half years​

Answer 1

Answer:

Solution: Principal for the first year =Rs 1000

SI=P×R×T100SIfor1styear=1000×4×1100SIfor1styear=Rs40

Amount at the end of first year =Rs1000 + Rs 40 = Rs 1040. Principal for the second year = Rs1040

SIfor2ndyear=1040×4×1100

SIfor2ndyear=Rs41.60

Amount at the end of second year,  

Amount=Rs1040+Rs41.60=Rs1081.60

Therefore,

Compoundinterest=Rs(1081.60–1000)=Rs81.60

Remark: The compound interest can also be computed by adding the interest for each year.

Compound Interest when Compounded Half Year