Question
In certain years a sum of money is doubled to itself at 6$1/4$% simple interest per annum, then the required time will be
Answer: Option B
Answer: (b)According to the question,If principal be Rs. x, thenS.I. = Rs. xTime = ${SI × 100}/\text"Principal × Rate"$= ${x × 100}/{x × 25/4} = 400/25$ = 16 yearsUsing Rule 3,T = ${(n - 1)}/R × 100%$= ${2 - 1}/{25/4} × 100$= $400/25$ = 16 years.
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Answer: (b)According to the question,If principal be Rs. x, thenS.I. = Rs. xTime = ${SI × 100}/\text"Principal × Rate"$= ${x × 100}/{x × 25/4} = 400/25$ = 16 yearsUsing Rule 3,T = ${(n - 1)}/R × 100%$= ${2 - 1}/{25/4} × 100$= $400/25$ = 16 years.
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