Find the amount after 3 years if the rate of interest is 15% per annum and the principal is Rs. 24,000.
Amount after t years = Principal + (Principal * (Rate of interest / 100) * t)
Plugging in the values given in the question, we get:
Amount after 3 years = 24000 + (24000 * (15 / 100) * 3)
Amount after 3 years = 24000 + 10800
Amount after 3 years = Rs. 34800
So the amount after 3 years would be Rs. 34800 using simple interest.