The simple interest on a sum of money is half of the sum invested. If

1.	The simple interest on a sum of money is half of the sum invested. If the number of years is numerically half the rate per annum, then the rate percentage per annum is:1. 10%2. 4%3. 25 / 4%4. 8%
Answer» Correct Answer - Option 1 : 10% GIVEN: The simple interest on a sum of money is half of the sum invested. FORMULA USED: SI = (P × R × T)/100 CALCULATION: Suppose time = R/2, Rate = R Now, P/2 = (P × R × R)/(100 × 2) ⇒ R² = 100 ⇒ R = 10% ∴ The rate percentage per annum is 10%

The simple interest on a sum of money is half of the sum invested. If the number of years is numerically half the rate per annum, then the rate percentage per annum is:1. 10%2. 4%3. 25 / 4%4. 8%

Answer» Correct Answer - Option 1 : 10%

GIVEN:

The simple interest on a sum of money is half of the sum invested.

FORMULA USED:

SI = (P × R × T)/100

CALCULATION:

Suppose time = R/2, Rate = R

Now,

P/2 = (P × R × R)/(100 × 2)

⇒ R² = 100

⇒ R = 10%

∴ The rate percentage per annum is 10%

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The simple interest on a sum of money is half of the sum invested. If the number of years is numerically half the rate per annum, then the rate percentage per annum is:1. 10%2. 4%3. 25 / 4%4. 8%

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