this question was to find out at what rate percent will a sum of money triples itself in 12 years ok so what is this question be given that will let the principal has led the principal b is equal to P ok and the time is given to us which is equal to time is given to 12 years find the rate of interest so that the amount will become crys so principal Lokesh we are given that amount this is amount ok Swift to find out what their to contest the mouth to become 33 times of principal so we know that simple interest is given by amount - principal ok and we know that amount is your 2 3 P and P is awesome principle sir Kata topi
how can we know that simple interest and bitterness Pintu identity / 112 get into our into divided by 100 is equal to topi topi and we get her eyes are into t is equal to 200 your cosmetics now time is given processes to I was 12 years old I will get 212 now look at this and we know that to in 200 is given by 206 is my best to get 5252 22236 will get will be 53 Navi Shobhit father can see this is 53553 ok this is 50
you are you but I will know that 3216 is 48 reminder will Bittu ok so we can buy this equation H 58162 by 3% the rate of interest in which the amount to become price of principal for Ansari 16213 thanks so much for watching the video solution
A. 5 yrs
B. 10yrs
C. 15 yrs
D. 20 yrs
Solution(By Examveda Team)
Simple Interest Let,
Principal, P = Rs. 100;
Amount, A = Rs. 300;
Rate of interest = 20%;
Interest = Rs. 200;
Time = total interest / rate of interest = 200/20 = 10 years.
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Solution
The correct option is D
20%
2P=P×R×10100
⇒R=20%
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