Answer :
x - red
y - blue
[tex]\frac{x}{y}=\frac{4}{7}\\ \frac{x+10}{y}=\frac{6}{7}\\\\ 7x=4y\\ 7x+70=6y\\ 4y+70=6y\\ 2y=70\\ y=35\\\\ 7x=4\cdot35\\ 7x=140\\ x=20[/tex]
y - blue
[tex]\frac{x}{y}=\frac{4}{7}\\ \frac{x+10}{y}=\frac{6}{7}\\\\ 7x=4y\\ 7x+70=6y\\ 4y+70=6y\\ 2y=70\\ y=35\\\\ 7x=4\cdot35\\ 7x=140\\ x=20[/tex]