Question

QUESTION⇒
₹ 9000 becomes ₹ 18000 at simple interest in 8 years. Find the rate per cent per annum

Answer 1

Answer:

Correct question:-

₹ 9000 becomes ₹ 18000 at simple interest in 8 years. Find the rate per cent per annum

Solution:-

★ Given:-

•Amount = 18000

•Principal = 9000

★ Using formula:-

Simple Interest = Amount - Principal

= 18000 - 9000

⟹ 9000

So,

Simple interest = PRT / 100

9000 = 9000 × R × 8 / 100

★ Point to remember:-

By cancelling 9000 on both sides, we get,

R = 25/2 %

R = 12.5 % per annum

Therefore the rate percent per annum is 12.5%

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Step-by-step explanation:

$Hope \: it \: helps...!!$

Answer 2

Answer:

12.5%

Step-by-step explanation:

Amount = 18000

Principal = 9000

So, Simple Interest = Amount - Principal

= 18000 - 9000

= 9000 .

So,

Simple interest = PRT / 100

9000 = 9000*R*8 / 100

9000 and 9000 is cancelled,

R = 25/2 % or 12.5 % per annum.