Question

in how many years will ₹8000 amount to ₹8820 at 5% per annum compounded annually?

Answer 1

Principal = Rs 8000

Interest rate = 5%

Amount Received = Rs 8820


Find the time needed:

Amount = P(1 + r)ⁿ

8820 = 8000( 1 + 0.05)ⁿ

8820 = 8000(1.05)ⁿ

1.05ⁿ = 1.1025

log 1.05ⁿ = log 1.1025

n log 1.05 =  log 1.1025

n = log 1.1025 ÷  log 1.05

n = 2


Answer: It will take 2 years

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BrainlyPrince Genius


Principal = 8000 rupees

Compound interest = 5% per annum



Let, it will take x years to amount to 8820 rupees.

Amount = 8820 rupees





So, in 2 years the amount will become 8820 r

Answer 2

Answer:

Step-by-step explanation:

p=8000

a=8820

r=5%

si= 820

820=8000x5xT/100

820/400=2.5yrs

t=2.5yrs