Question

In how much time will a certain sum be 1.5 times the principal at 10% per annum ?

Answer 1

hi
let the principal (P)=rs x
rate of interest per year= r=10
Amount= A =1.5 of principal
A=rs 1.5 x
time =T
we know that
A =P(11 +RT/100)
now substitute the given values
1.5=x(1+10xT/100)
15x/10=x(1+T/10)
15x/10=x/10x(10+T)
=15 x/10) x (10/x)=10+T
15=10+T= 15-10=T
therefore
(5=T) = T= 5 years
I hope that it will surely help u
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