Answer
$10$ minutes
Work Step by Step
Need to find the time duration for the person talk.
Number of minutes are = $x$
Thus, as per the statement, we have
$0.43+0.32x+2.10=5.73$
or, $0.32x=5.73-2.53$
or, $x=\dfrac{3.2}{0.32}=10$ minutes
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