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If a sum triples in 15 years at simple rate of interest, the rate of interest per annum will be:
- a)13.0%
- b)13.3%
- c)13.5%
- d)18.0%
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
If a sum triples in 15 years at simple rate of interest, the rate of i...
Solution:
Given that sum triples in 15 years at simple rate of interest.
We need to find the rate of interest per annum.
Let the sum be P, rate of interest be R and time be T.
As per the given condition, we have:
P + (R*T*P)/100 = 3P
Simplifying this equation, we get:
R = (200/3T)%
Now, we need to substitute T = 15 years in the above equation to get the rate of interest per annum.
R = (200/3*15)%
R = 13.3%
Therefore, the rate of interest per annum is 13.3%.
Hence, the correct answer is option B.
Given that sum triples in 15 years at simple rate of interest.
We need to find the rate of interest per annum.
Let the sum be P, rate of interest be R and time be T.
As per the given condition, we have:
P + (R*T*P)/100 = 3P
Simplifying this equation, we get:
R = (200/3T)%
Now, we need to substitute T = 15 years in the above equation to get the rate of interest per annum.
R = (200/3*15)%
R = 13.3%
Therefore, the rate of interest per annum is 13.3%.
Hence, the correct answer is option B.
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Community Answer
If a sum triples in 15 years at simple rate of interest, the rate of i...
Let us suppose that the sum is to be 100
p=100 , 3p=300
p=100 , A=300 then I(SI) =200
since I in the equation of I =pit is given (p=principal, I=rate percent, t=time, -p=100, i=?, t=15
now 200=100× i × 15
200/1500×100=~13.33
p=100 , 3p=300
p=100 , A=300 then I(SI) =200
since I in the equation of I =pit is given (p=principal, I=rate percent, t=time, -p=100, i=?, t=15
now 200=100× i × 15
200/1500×100=~13.33
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If a sum triples in 15 years at simple rate of interest, the rate of interest per annum will be:a)13.0%b)13.3%c)13.5%d)18.0%Correct answer is option 'B'. Can you explain this answer?
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