Let us write the number of years for which a principal becomes twice of its amount having the rate of simple interest of 6 \frac{1}{4} % per annum Open Answer »
The ratio of the principal and the amount (principal along with interest) in 1 yr is 8 : 9; the rate of simple interest per annum is ___ Open Answer »
The amount of ₹ 2p in t years at the rate of simple interest of \frac{r}{2}\% per annum is Rs .(2p + _________). Open Answer »
State True or Fale : If the principal and the rate of simple interest in percent per annum be constants, then the total interest and the time are in inverse relation Open Answer »
The total interest of a principal in n years at the rate of simple interest of r% per annum is \frac{p n r}{25}, the principal will be (a) ₹ 2p (b) ₹ 4p (c) ₹ \frac{p}{2} (d) ₹ \frac{p}{4} Open Answer »
If a principal becomes twice of its amount in 10 years, the rate of simple interest per annum is (a) 5% (b) 10% (c) 15% (d) 20% Open Answer »
A principal becomes twice of its amount in 20 yrs at a certain rate of simple interest. At the same rate of simple interest, that principal becomes thrice of its amount in (a) 30 years (b) 35 years (c) 40 years (d) 45 years Open Answer »
