Question

plz answer fast
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Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

12.5 yr

Step-by-step explanation:

Given :

Rate of interest = 8%

Amount is 2 times of Principal .

To Find :

Time (yr)

Solution :

let, principal(p) be Rs x .

So, Amount (a)= 2x

And Simple Interest (S.I) = Rs (2x - x ) = Rs x

We know that,

$\frac{prt}{100} = s.i\\ \\ \frac{x.8.t}{100} = x \\ \\ t = \frac{100}{8} \\ \\ t = \frac{25}{2} \\ t = 12\frac{1}{2} \: \: \: or \: 12.5 \: \:$

So, the required time is 12.5 yr .