Question

At what rate of interest per annum will a sum of ₹8000 amount to ₹ 9260 in 7/2 years

Answer 1

Hello here is your answer by Sujeet yaduvanshi ☝☝☝☝☝

____________________________________

Let rate of interest=r%Time(t)=312


 years=7/2 years=3.5



 yearsPrincipal amount(P)=Rs 8000


Total amount=Rs 9260
So, 

S.I.=Rs 9260−Rs 8000=Rs 1260

Now,
S.I.=P×r×t100⇒1260=8000×r×3.5100

r=1260×1008000×3.5⇒


r=4.5 %

that's all

Answer 2

=r%Time(t)=312 years=7/2 years=3.5 years

 Principal amount(P)=Rs 8000

Total amount=Rs 9260So, S.I.=Rs 9260−Rs 8000=Rs 1260

Now,S.I.=P×r×t100⇒1260=8000×r×3.5100⇒

rate=1260×1008000×3.5⇒

rTE=4.5 %