Question

In what time will a sum of money double itself at 10%p.a.?​

Answer 1

Question:

In what time will a sum of money double itself at 10%p.a.?

Answer:

10 years

Solution:

If Principal is 100,then S.I will be 100.

$\sf{S.I= \frac{PRT}{100} }$

$\sf \to{100 = \frac{100 \times 10 \times T}{100} }$

$\sf \to{100 = 10T}$

$\sf \to{T = \frac{100}{10} }$

$\sf \to{T = 10yrs}$

∴ In 10 years the sum of money double itself at 10%p.a.