A certain sum of money doubles itself in 8 years .In how much time will it become 4 times of itself at the same rate of interest?
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Direct method
1-----------2 in 8 yr
In 8yr we get interest =1
Now
1------------4
Interest =4-1=3
If we get 1 as interest in 8 year then we get 3 in 24yr
This is ur ans hope it will help you in case of any doubt comment below
1-----------2 in 8 yr
In 8yr we get interest =1
Now
1------------4
Interest =4-1=3
If we get 1 as interest in 8 year then we get 3 in 24yr
This is ur ans hope it will help you in case of any doubt comment below
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