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At what rate percent of simple intere...

At what rate percent of simple interest will a sum of money double itself in 12 years? `8 1/4%` (b) `8 1/3%` (c) `8 1/2%` (d) `9 1/2%`

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RS AGGARWAL-SIMPLE INTEREST-All Questions
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  15. If the simple interest for 6 years be equal to 30% of the principal...

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