Question

If Rs.325 amount to Rs700 in 3 years at simple interest ,find the rate of interest. What would have been the amount if the rate was 10%?
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Answer 1

Answer:

(ptr/100)+p=700

(325×3×r)/100)+325=700

325(3r/100+1)=700

(3r+100)/100=700/325

3r+100=70000/325

3r=(70000/325)-100

3r=(70000-32500)/325

3r=37500/325

r=12500/325

r=2500/65

r=500/13

second one if r is 10%

si = 325×3×10/100

=325×3/10

=975/10

or 97.5