Question

ln 4years ₹6000 amount to ₹ 8000.ln what time will ₹525 amount to₹700 at the same rate

Answer 1

Case-1
Given

P=₹6000
A=₹8000
T=4yr

Interest =p-a

=8000-6000

I=2000

And know

Interest =pxrxt /100

2000=6000xrx4/100

R=2000*100/6000x4

R=200/24

R=100/12

R=50/6=>25/3

$r = 8 \frac{1}{3} \%$

Now in case - 2

Given

P=₹525
A=₹700
And rate of interest will be same

R=8 1/3 =25/3%

Si=p-a

Si =700-525

=₹175

Si=pxrxt /100

175=525*25*T/100*3


T=175*3*100/525*25

T=525*100/525*25

T=100/25

T=4yr

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