Question 212188
13/5=x/(2610-x)
13(2610-x)=5x
33,930-13x-5x=0
-18x=-33,930
x=-33,930/-18
x=1,885 number of blue marbles.
2,610-1,885=725 red marbles.
13/5=1885/725
5*1885=13*725
9,425=9,425