Question

In how many years will a sum of Rs. 4,000 yield a simple interest of Rs. 1,440 at 12% per annum?​

Answer 1

Answer:

35÷4years

Step-by-step explanation:

$t = \frac{i \times 100}{rp}$

$\frac{1400 \times 100}{12 \times 4000}$

$= \frac{7 \times 5}{3 \times 4}$

$\frac{35}{4} years$

Answer 2

Answer:

$t=3$ years

Step-by-step explanation:

Given : Principle amount = Rs. $4000$

          Simple interest = Rs. $1440$

          Rate of interest = $12$%

To find : No. of years = ?

Solution :

• We know that

          S.I. = $\frac{PRt}{100}$

• ∴ $1440 = \frac{4000*12*t}{100}$
• Now, rearranging the terms to find the time period, we get

            $t = \frac{1440*100}{4000*12}$

         ∴ $t = 3$

• ∴ The time required is $3$ years.