There are 60 balls in the box, of which there are 4 times more red balls than white ones, and 7 times more green ones

There are 60 balls in the box, of which there are 4 times more red balls than white ones, and 7 times more green ones than white ones. How many balloons of each color are in the box?

According to the condition of the problem:
the total number of balls – 60 pcs.;
the number of red balls is 4 times more than the white ones;
the number of green balls is 7 times more than the white ones;
To find:
the number of balls of each color -?;
Decision:
Let the number of white balls in the box be X, then we get an equation where the number of red balls will be 4X, and the number of green ones will be 7X:
X + 4X + 7X = 60;
12X = 60;
X = 5;
Hence:
4X = 4×5 = 20;
7X = 7×5 = 35;
Answer: the number of white balls in the box was 5, the number of green balls was 35, and the number of red balls was 20.