If the simple interest on a certain of money is displaystyle frac-1-100-th of the and the rate per cent equals to 9 times the number of years- then the rate of interest per annum is1-3-2-4-

Question

Toppr Admin · Accepted Answer

The correct option is C 3-SI-P-100-r-9t-x27F9-t-r-9SI-P-xD7-r-xD7-t100-x27F9-P-100-P-xD7-r-xD7-r-9-100-x27F9-r-xD7-r-9-1-x27F9-r-3-

If the simple interest on a certain sum of money is $\frac{1}{100}$ th of the sum and the rate per cent equals to 9 times the number of years, then the rate of interest per annum is
$1$ %
$3$ %
$2$ %
$4$ %

The correct option is C $3$ %
$S I = P / 100; r = 9 t ⟹ t = r / 9$
$S I = \frac{P \times r \times t}{100}$
$⟹ (P / 100) = \frac{P \times r \times (r / 9)}{100}$
$⟹ r \times (r / 9) = 1 ⟹ r = 3 %$

If the simple interest on a certain sum of money is 1100th of the sum and the rate per cent equals to 9 times the number of years, then the rate of interest per annum is1%3%2%4%

The correct option is C 3%SI=P/100;r=9t⟹t=r/9SI=P×r×t100⟹(P/100)=P×r×(r/9)100⟹r×(r/9)=1⟹r=3%

If the simple interest on a certain sum of money is $\frac{1}{100}$ th of the sum and the rate per cent equals to 9 times the number of years, then the rate of interest per annum is
$1$ %
$3$ %
$2$ %
$4$ %

The correct option is C $3$ %
$S I = P / 100; r = 9 t ⟹ t = r / 9$
$S I = \frac{P \times r \times t}{100}$
$⟹ (P / 100) = \frac{P \times r \times (r / 9)}{100}$
$⟹ r \times (r / 9) = 1 ⟹ r = 3 %$