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Question : A certain sum becomes 5 times in 3 years, at Simple Interest, then in how many years it will become 13 times?

Option 1: 6

Option 2: 15

Option 3: 9

Option 4: 12


Team Careers360 20th Jan, 2024
Answer (1)
Team Careers360 24th Jan, 2024

Correct Answer: 9


Solution : Let the sum be P.
Total amount for 3 years = 5P
Simple Interest for 3 years = 5P – P = 4P
If total amount = 13P,
Simple Interest = 12P
Using the unitary method,
Since, in 3 years interest is 4P
Therefore, 12P interest will be received in 9 years.
Hence, the correct answer is 9.

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