Dianne W. answered 09/10/15
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Set variables for each person, then translate each part of the problem into an equation.
Let Tom be "t"
Max is "m"
Will is "w"
"Tom and Max collected 952 stickers" is t+m=952
"Max collected 3 times as Tom" is m=3t
"Will collected half as much as Tom" is w=(1/2)t
Now use substitution.
With t+m=952 and m=3t you have
t+3t=952
4t=952
So, Tom is 238
t+m=952
238+m=952
So, Max is 714
w=(1/2)t
w= (1/2)238
So, Will is 119