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What is the duration of one cardiac cycle in man when the heart beats for 75 times per minute?

$\begin {array} {1 1} (1)\;0.3\: seconds & \quad (2)\;0.4\: seconds \\ (3)\;0.8\: seconds & \quad (4)\;0.5\: seconds \end {array}$

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(3) 0.8 seconds
answered Nov 7, 2013 by pady_1

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