Question : For what sum will the simple interest at $R$% per annum for 2 years be $R$?

Option 1: Rs. $\frac{100}{2R}$

Option 2: Rs. $50$

Option 3: Rs. $\frac{100}{R}$

Option 4: Rs.$\frac{200}{R}$

Question : If $x=(0.25)^\frac{1}{2}$, $y=(0.4)^{2}$, and $z=(0.216)^{\frac{1}{3}}$, then:

Option 1: $y>x>z$

Option 2: $x>y>z$

Option 3: $z>x>y$

Option 4: $x>z>y$

Question : A person borrowed some money at simple interest. After 4 years, he returned $\frac{9}{5}$th of the money to the lender. What was the rate of interest?

Option 1: 25% per annum

Option 2: 10% per annum

Option 3: 15% per annum

Option 4: 20% per annum

Question : The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The simple interest on the same sum for double the time at half the rate percent per annum is:

Option 1: Rs. 520

Option 2: Rs. 550

Option 3: Rs. 500

Option 4: Rs. 515

Question : A man borrowed some money from a private organisation at 5% simple interest per annum. He lent this money to another person at 10% compound interest per annum and made a profit of Rs. 26,410 in 4 years, the man borrowed:

Option 1: Rs. 2,00,000

Option 2: Rs. 1,50,000

Option 3: Rs. 1,32,050

Option 4: Rs. 1,00,000