If the compound interest on a certain sum for 2 years is rs. 21. What could be the simple interest
Answers
Answered by
1
Answer:
20 could be the simple interest.
Step-by-step explanation:
Let the principal is x and the rate of interest is r% annually.
The simple interest after 2 years will be .
The compound interest after 2 years is .
As per the given scenario, = 21.
.
If we break 21 as 10 + 10 + 1, then it gives two equal parts 10. We can compare this 10 as .
Hence, thus 20 could be the simple interest.
Answered by
4
Answer:
₹20
Step-by-step explanation:
let just assume principal be 100.
Then according to formula of CI, interest will be
p(1+r/100)^2 - p = 100(1+r/100)^2 - 100 = 21
(1+r/100)^2 = 1.21
1+r/100 = 1.1 ---> r/100 = 0.1
hence r = 10%.
Then SI will be PRT/100
= (100×10×2)/100
=20.
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