If the simple interest for 5 yr be equal to 40% of the principle, it will be equal to the principle after?

12 yr 3 months
12 yr 6 months
12 yr 4 months
12 yr 9 months

Correct Answer: 12 yr 6 months

Explanation:

If interest is 40% of the principal then time = 5 years.
So, when interest would be equal to 100% of the principal time would be
= (100/40) x 5 years = 12.5 years
= 12 yr 6 months

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