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# At a certain rate of simple interest, a principal becomes three times

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Senior Manager
Joined: 29 Nov 2018
Posts: 263
Concentration: Marketing, Strategy
At a certain rate of simple interest, a principal becomes three times  [#permalink]

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17 Jul 2019, 04:12
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At a certain rate of simple interest, a principal becomes three times in 15 years. In how many years will the principal amount become nine times?

1. 45 years
2. 30 years
3. 60 years
4. 75 years
5. None of these
Intern
Joined: 16 Feb 2019
Posts: 28
Re: At a certain rate of simple interest, a principal becomes three times  [#permalink]

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25 Jul 2019, 03:06
60
Please correct me if I am wrong

Posted from my mobile device
Re: At a certain rate of simple interest, a principal becomes three times   [#permalink] 25 Jul 2019, 03:06
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# At a certain rate of simple interest, a principal becomes three times

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