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A certain amount of money doubles itself in 8yrs . in what time (in yrs) will it be 5 times of iitself on simple interest?

2
by swathu

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by swathu

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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