Question 616933
Why not ask "rrapalje"?
It is his problem.
Submit one problem at a time and no similar problems.
I will do the second.
a+y+c=50;
y=c+10;
2.5c+3.5y+5a=219
Now you have three equations with three unknowns. Solve with your favorite method.
Enjoy
a=32,   c=4,   y=14