After how many years will a sum of ₹12,500 become ₹17,500at a rate of 10% per annum?

To find out after how many years a sum of ₹12,500 will become ₹17,500 at a rate of 10% per annum, we can use the formula for simple interest:

I = PRT/100

Where: I = Interest P = Principal amount (the initial amount of money) R = Rate of interest T = Time in years

In this case, we know the principal amount (P = ₹12,500), the final amount (₹17,500), and the rate of interest (R = 10%). We need to find the time (T).

First, we need to find out the interest (I), which is the final amount minus the principal amount:

I = ₹17,500 - ₹12,500 = ₹5,000

Now we can substitute the values into the formula and solve for T:

₹5,000 = ₹12,500 * 10 * T / 100

Solving for T gives:

T = ₹5,000 * 100 / (₹12,500 * 10)

T = 4 years

So, a sum of ₹12,500 will become ₹17,500 at a rate of 10% per annum after 4 years.