Question 1206275
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In the first 5 seconds, he takes 5 steps -- 3 forward and 2 backward; he traveled 6 feet forward and 4 feet back, ending up 2 feet from his starting point.<br>
That continues for 8 cycles, taking 8*5 = 40 seconds, leaving him 16 feet from the start.<br>
In the next 3 seconds, he moves 6 feet forward, reaching 22 feet from the start, which is the other side of the carpet, so he is done.<br>
ANSWER: 40+3 = 43 seconds<br>