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It means that the boys will get money in proportion 2 : 3 : 5.
In other words, 1-st boy will get 2x dollars;
2-nd boy will get 3x dollars,
and 3-rd boy will get 5x dollars.
To find x, use the total money equation
2x + 3x + 5x = 5 dollars
10x = 5
x = 5/10 = 0.5 dollars.
Thus 1-st boy will get 2*0.5 = 1 dollar; 2-nd will get 3*0.5 = 1.5 dollards, and 3-rd will get 5*0.5 = 2.5 dollars. ANSWER
Solved.