Given
A teenage boy was 4 feet 9 inches tall.
Since then, he has grown 9 inches.
To find:
The height of the boy.
Explanation:
It is given that,
A teenage boy was 4 feet 9 inches tall.
Since then, he has grown 9 inches.
That implies,
[tex]\begin{gathered} The\text{ }height\text{ }of\text{ }the\text{ }boy=4ft\text{ }9in+9in \\ =4ft\text{ }(9+9)in \\ =4ft\text{ }18in \\ =4ft\text{ }+1.5ft \\ =5ft\text{ }6in \end{gathered}[/tex]Hence, the height of the boy is 5feet 6inches.