Question

Question No : 5
Eesha invested a certain sum of money at 8% pa simple interest for 'n' years. At the end of 'n' years, Eesha got back 4 times his original investment What is the value of n?​

Answer 1

Answer:

Question No : 5

Eesha invested a certain sum of money at 8% pa simple interest for 'n' years. At the end of 'n' years, Eesha got back 4 times his original investment What is the value of n?

Answer 2

Answer:

37.5

Step-by-step explanation:

Amount = Principal + Simple Interest.

Let us assume that Eesa invested $100.

Then, at the end of 'n' years he would have got $400.

Therefore, the Simple Interest earned = 400 - 100 = $300.

Substitute values of simple interest, principal and rate in equation 1.

300 = \\frac{100 * n * 8}{100})

Or 8n = 300

Or n = 37.5 years.

Any amount, when invested for 37.5 years at 8% per annum simple interest would become 4 times the original investment made.