Answer:
The ratio of the green marbles to all the marbles will then be;
[tex]15\colon22[/tex]Explanation:
Given that;
A jar contains 22 marbles.
5 are blue and 2 are red.
The number of green, which is the remaining marbles is;
[tex]\begin{gathered} G=22-(5+2)_{} \\ G=22-7 \\ G=15 \end{gathered}[/tex]So, there are 15 green marbles.
The ratio of the green marbles to all the marbles will then be;
[tex]15\colon22[/tex]Or
[tex]\frac{15}{22}[/tex]