Answer:
Ryan in 1 hour can code 4/5 of his game
Explanation:
we know that
In 3/4 of an hour Ryan codes 3/5 of his game
so
using proportion
Find out how much of the game can he code in 1 hour
Let
x ----> fraction of the game that Ryan can code in 1 hour

Simplify

therefore
Ryan in 1 hour can code 4/5 of his game