Math, asked by enrique, 1 year ago

In a bank , principal increases continuously at the rate of 5% per year . In how many years Rs 1000 double itself


Anonymous: In which book it is
enrique: I dont know it is in my daily practice papers
enrique: Just come randomly
Anonymous: No reply inbox?
Anonymous: It was in 11
enrique: OK

Answers

Answered by kvnmurty
0
The problem appears to be that of compound interest.
A = P (1 + r/100)^n
A = Amount of n years,  P = principal,  r= rate of interest
2P= P (1 + 5/100)^n
2 = 1.05^n
Log 2 = n * Log 1.05
n = 14.2 years 

=================
For the case of simple interest:

interest = P * r* n/100 
For doubling principal, interest = principal
So r*n = 100  =>  n = 100/5 = 20 years

Anonymous: no..ans i 2yrs
enrique: See the photo of rakshwa
enrique: And is 2000
enrique: U r wrong
enrique: And is 20log2
Anonymous: How cm its certified answer?
enrique: Yup his and is incorrect
Anonymous: Wts happening in this site..wrong ans and certified..crrct not?
enrique: His ans is incorrect
Anonymous: Yeah..leave it now..u got crrct ans na..
Answered by Anonymous
0
Heres the answer gopal
Hope u like it
Attachments:

enrique: Best answer help me a lot thnku
Anonymous: Tqsm
Anonymous: For marking my ans as best
enrique: Np
Anonymous: Actually i thought of writing it up..but then thought of sending pic
enrique: Yeah but ur and is good rakshaw
Anonymous: Tq
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