Explanation:
So it's a one line question. But a lot of information provided in one line. Let's check what's that!
Given: Amount (A) is Rs. 30000, Principal (P) is Rs. 2400 and rate (R) is 10% p.a.
To find: Time (t).
Solution: Using the very basic formula: A = P (1 + R/100)^t
Simply plugin the values in above formula to get the value of time (t).
Let's dive in!
⇒ A = P (1 + R/100)^t
⇒ 30000 = 2400 (1 + 10/100)^t
⇒ 30000 = 2400 (1 + 1/10)^t
⇒ 30000 = 2400 (11/10)^t
⇒ 30000/2400 = (11/10)^t
⇒ 300/24 = (11/10)^t
⇒ 25/2 = (11/10)^t
Seems like there's something wrong in question. Because to get the value of time there should be equivalent values which ain't. So let's continue with the calculation.
⇒ 25 = (11/5)^t
⇒ 125 = (11)^t
⇒ (11)^11 = (11)^t
⇒ t = 11 years (approx.)