SOLUTION: a certain sum of money doubles itself at simple interest in 8 years. in how many years will it be three times at the same rate?

SOLUTION: a certain sum of money doubles itself at simple interest in 8 years. in how many years will it be three times at the same rate?

Algebra.Com

Question 522879: a certain sum of money doubles itself at simple interest in 8 years. in how many years will it be three times at the same rate?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
principal =x
Interest =x
x= x*8*r/100
r=100/8
--------------=
2x= x*n*100/8 *1/100
2=100n/800
1600=100n
n= 16 years

RELATED QUESTIONS
A certain sum of money doubles itself in 6 years.In how many years will it be three times (answered by MathTherapy)

A certain sum doubles in 3 years under simple interest. In how many years will the sum... (answered by josmiceli)

1.A sum of money placed at compound interest doubles itself in 5years. in how many years... (answered by Boreal)

a certain sum of money becomes double of itself in 6 years on simple interest in what... (answered by josmiceli)

simple interest- in how many years will a certain sum of money double itself as the... (answered by Alan3354,Elakurthy)

a sum of money doubles itself in 8 years find the rate of... (answered by math_helper,MathTherapy)

In how many years will a sum double itself at 7.5% simple... (answered by richwmiller)

simple interest- at what rate of interest will a sum of money double itself in 5... (answered by Alan3354,Elakurthy)

at what simple interst rate will a sum of money double itself in 5 years ? (answered by Alan3354)