Let the number of eggs Ryo actually needs be represented by the letter "x".
Then the number of eggs Ryo ordered was [tex]240\%[/tex] of that amount. This can be represented as:
[tex]240\%\times x=\frac{240}{100}x= \frac{12}{5}x[/tex]
Now, to find what fraction of the number of eggs Ryo actually needs in his restaurant, all that we need to do is divide the actual number of eggs, which is "x", by the amount of eggs Ryo actually accidentally ordered which is [tex]\frac{12}{5}x[/tex].
Thus, we get:
Fraction=[tex]\frac{x}{\frac{12}{5}x}= \frac{5}{12}[/tex]
Thus, [tex]\frac{5}{12}[/tex] is the required answer.