Question

in what time will a sum of money doubles itself at 8 p.a at compound interest

Answer 1

Answer:

Consider the principle P=Rs.100

It is given A= 100×2 =Rs.200

We know that  S.I=A−P

Substituting the values =200−100=Rs.100

Rate is given as R=8% p.a.

Here,

Time (T)=(S.I×100)/(P×R)

Substituting the values =(100×100)/(100×8)

                                      =25/2

So we get =25/2=12(1/2) years

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Step-by-step explanation: