Answer: Junior is 3 3/10 feet tall .
Explanation:
As given
Junior's brother is 5 1/2 feet tall
i.e
Junior's brother is 11/2 feet tall
Junior is 3/5 of his brother's height
Thus
Junior's heights = 3/5 times his brother's height
Putting all the values in the formula
Junior's Height = 3/5 X 11/2
Junior's height = 33/10
Junior's height = 3 3/10 feet
Therefore Junior is 3 3/10 feet tall .