Question

in how much time rupees 650 become 800 12.50 at 6 1 by 4% per annum

Answer 1

Answer:

4 months

Step-by-step explanation:

The formula to compute the compounded amount is:

A = P(1 + r/100)ⁿ

Given

A = Rs. 812.50

P = Rs. 650

r =  25/4 p.a

Compute the time it takes (n) as follows:

⇒ 812.50= 650(1 + 6.25/100)ⁿ

⇒ 1.25 = (1.0625)ⁿ

∴ n = 0.272 years ≈ 4 months

Thus, the time taken is approximately 4 months.