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# A tyre has two punctures. The first puncture alone would have made the tyre flat in 9 minutes and the second alone would have done it in 6 minutes. If air leaks out at a constant rate, how long does it take both the punctures together to make it flat ?

$3\frac{1}{5}min$

$3\frac{2}{5}min$

$3\frac{3}{5}min$

$3\frac{4}{5}min$

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