Math, asked by alizba2, 2 months ago

reena made a fixed deposit for certain years. She deposited 12000 and after maturity of the fixed deposirt she got 15972. The interest rate was 10% p.a. compounded annually. Find the time.

Answers

Answered by Anonymous
3

Answer:

Given

Installment per month P=800

Number of months n=48

Amount received at maturity =48200  

Let  

Rate of interest be r% p.a

∴S.I.

​  

=P×  

2×12

n(n+1)

100

r

=800×  

2×12

48(49+1)

​  

×  

100

=8×2×49×r

=784 r

​  

Now, Maturity value = Money deposited + Interest

⇒48200=800×48+784 r

⇒48200=38400+784 r

⇒784 r=48200−38400=9800

⇒r=  

784

9800

⇒r=12.5

Hence, the rate of interest is 12.5%

Step-by-step explanation:

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