A sum of money doubles itself in 7 years inhiw many years will it bemoe 4 times
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Let sum of money is P
so SI=PTR/100=P*7*r/100=7pr/100
or 2p=7pr/100
or r=200/7
so let in t yrs it will become fourfold
means here
Si =ptr/100=(p*t*200/7)/100
or 4p=(2/7)pt
or 4*7/2=t
or t=14 yrs
hope this helps...!!
so SI=PTR/100=P*7*r/100=7pr/100
or 2p=7pr/100
or r=200/7
so let in t yrs it will become fourfold
means here
Si =ptr/100=(p*t*200/7)/100
or 4p=(2/7)pt
or 4*7/2=t
or t=14 yrs
hope this helps...!!
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