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a sum of Rs. 5000 was lent partly at 6% ...

a sum of Rs. 5000 was lent partly at `6%` and partly at `9%` simple interest. If the total interest received after 1 year was Rs. 390, what was the ratio which the money was lent at `6%` and `9%` ?

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The correct Answer is:
`2:3`
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