Write the number of yrs in which the amount becomes twice of the principal having the rate of simple interest 6 1/4 °/• per annum.
Answers
Answer:
Here , let us assume that the principal for the simple interest is Rs. x .
Now , the rate of the simple interest is 6 1/4 % per annum .
Rate :
> [ 24 + 1]/4 %
=> 25/4 % per annum .
Assume that the required number of years after the principal doubles to become twice of its amount is t years .
According to the question :
If the principal become twice itself :
=> Original Principal + SI for a certain number of years ] = 2 × Original Principal
=> Original Principal = SI for a certain number of years .
We took the original principal as Rs. x and the time as t
=> x = [ x • t • 25/4 ] / 100
=> x = [ x • t • 25/400 ]
=> x = [ x • t • 1/16 ]
=> 1 = t/16
=> t = 16 years .
Thus , the required time period is 16 years .
This is the answer .
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