SOLUTION: how long would it take for money to double itself at 10% simple interest?

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Question 315129: how long would it take for money to double itself at 10% simple interest?

Found 2 solutions by malaydassharma, shreeaseem007@yahoo.in:
Answer by malaydassharma(59) About Me  (Show Source):
You can put this solution on YOUR website!

Interest I=Prt/100
Here I=P as the money is to be doubled.
Hence,
I =Irt/100
t=100/r
t=100/10= 10 years.

Answer by shreeaseem007@yahoo.in(3) About Me  (Show Source):
You can put this solution on YOUR website!
we dont know principal and rate
let P=100 and R=100

T=100*10/100*100
THIS WILL GIVE YOU 10 ANSWER