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Anindra nath samaddar

· started a discussion

· 1 Months ago

Ci-si (Question:922289.0)

Can u please elaborate how the difference of ci&si become P(r/100)^2

Question:

With the same rate of interest, the difference between the simple and compound interest for a period of 2 years on 12000 is 172.8 Rs. Find the rate of interest.

Options:
A)

15

B)

12

C)

10

D)

8

Solution:

Pr1002=   difference of compound interest & simple interest

12000r1002=172.8   

r2=172.8×1012=144   

r=12%   

Knowledge Expert

· commented

· 1 Months ago

it is the formula
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