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NITISH KUMAR

· started a discussion

· 1 Months ago

soln bahut long hai (Question:99296.0)

itna bahut bada soln hai

Question:
A sum of money becomes 3 times in 12 years. In how many years it will become 5 times at the same rate of simple interest?
Options:
A) 20 years 
B) 16 years
C) 24 years 
D) 30 years 
Solution:

Ans: (c) 

Given , sum will be three times i.e , A = 3P

Therefore  SI = A - P = 3P - P = 2P

SI = P*R*T / 100

From here putting SI = 2P , T = 12 years  we get ,  R = 100/6 %


Now Sum will be 5 times , A = 5P

SI = A - P = 5P - P = 4P

SI = P*R*T / 100

Putting SI= 4P , R = 100/6 % , we will get  T = 24  years


 

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· 1 Months ago

Dear student,
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· 1 Months ago

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