Answer:
Ben grows 5/8 feet more
Step-by-step explanation:
On his twelfth birthday Ben was 4 3/4 feet tall. On his thirteenth birthday Ben was 5 and 3/8 feet tall.
12th birthday , Ben was [tex]4\frac{3}{4} =\frac{19}{4}[/tex]
13th birthday , Ben was [tex]5\frac{3}{8} =\frac{43}{8}[/tex]
To find the difference in height between 12th and 13th birthday, subtract the heights
[tex]\frac{19}{4} -\frac{43}{8}[/tex]
To subtract , make the denominators same . LCD is 8
[tex]\frac{43}{8}-\frac{19}{4}[/tex]
[tex]\frac{43}{8}-\frac{38}{8}[/tex]
[tex]\frac{5}{8}[/tex]
So Ben grows 5/8 more