Math, asked by vichitrayadav3542, 1 year ago

In how many years will a sum of money double itself at 25/4% simple intrest per annuam

Answers

Answered by Anonymous
9

Question:

In how many years will a sum of money double itself at \frac{25}{4}% simple interest per annum.

Solution:

Let the principle be Rs. x.

Amount is double .

So amount = Rs. 2 x .

Simple interest = Amount - Principle

                          = Rs.(2 x - x) = Rs.x

Rate = 25/4%.

We know that ,

Time=\frac{SI*100}{Principle*Rate} \\\\=\frac{x*100}{x*\frac{25}{4} } =100*\frac{4}{25} =16years.

Answered by pratyush4211
5
Let Sum money be(Principal)=₹100
Double of it=2×100=₹200

In Rate=25/4%
it Become(amount]) ₹200

SI=Amount-Principal
SI=200-100
SI=₹100

Let Time=t

We know

 \frac{principal \times rate \times time}{100}  = si \\  \\  \frac{100 \times 25 \times t}{100 \times 4}  = 100 \\  \\ t = 100 \times  \frac{100 \times 4}{100 \times 25}  \\ \\  t = 16 \: years
\boxed{\mathsf{Time=16 years}}
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