Phil has 3 times as many rocks as peter. together, they have 48 rocks. how many more rocks does phil have than peter?

Let x = the number of marbles for Phil
Then 3x = the number of marbles for Peter
Together they have 3x+x=48 or 4x=48 and x=12
So Phil has x = 12 marbles and Peter has 3x, let x = 12, 3(12) = 36 marbles.
Peter has 24 more marbles than Phil.

Use a graph site then you will find your answer