How long would it take to earn $6,000 in interest on a principal of $9,000 at an annual simple interest rate of 4.1%? use the simple interest formula i = prt, where i is the interest earned, p is the principal, r is the interest rate per year, and t is the time in years.

Ok so we are given 6000 and I think that would be I
We are also given 9000, and I think that would be p
Also we are given 4.1% or 0.041 and I think that would be r
So the formula is 
I = prt
6000 = 9000*0.041*t                        So we are trying to figure out t, time
6000/0.041 = 146341.463
146341.463/9000 = 16.2601626 
I believe your answer would be 16.2601626, please let me know if that's right because I'm really not sure.

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm