How much time will it take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum of simple interest?

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Question: How much time will it take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum of simple interest?
[A].

3.5 years

[B].

4 years

[C].

4.5 years

[D].

5 years

Answer: Option B

Explanation:

Time = 100 x 81 years = 4 years.
450 x 4.5

Video Explanation: https://youtu.be/WdBzN0Sj8jc