Answer:
20 seconds!
Explanation:
A foot is equal to 12 inches meaning you take 12 and divide it by 24 to get 2 meaning its 2 feet. and if it took 10 seconds for one foot, then it will take 20 seconds for 2 feet
20 seconds
1ft in 10 seconds = 12 in / 10 sec
to get 24 inches, or 2 feet, we simply multiply that by 2:
(12 in /10 sec) * 2
24 in /20 sec
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