Question

at what rate percent of interest per annum will a sum of money Doubles in 8 years​

Answer 1

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Answer 2

Heya mate !!! HOw are you ??

Here is the solution of your question :-

Question :-

At what rate percent of interest per annum will a sum of money Doubles in 8 years .

Solution :-

Let the principal be Rs. 100.

Then, given that amount doubles = Rs. (2×100)

SI = A - P

Amount = 200

Principal = 100

SI = (200-100) = 100

Time = 8 years

Rate = SI × 100 / P × T

=> 100×100/100×8

=> 10000/800

=> 100/8

=> 12.5 %

Answer :-

Rate % = 12.5 %