Answer:
4 ft 11 inches
Explanation:
Remember that 12 inches is 1 foot, so 24 inches is 2 feet. That means, 23 inches is 1 foot 11 inches. 11/12 is one inch gone from a foot, so 23/24 much be one inch gone from 2 feet.
Since you already have 3 feet, adding the 1 foot and 11 inches leaves you with 4 ft 11 inches as a result.