Question 1185545
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The given information relates the ages of Ella and Lola to Sue's age.  So probably the easiest setup for solving the problem is using Sue's age for the variable.<br>
Let x = Sue's age
Then x+12 = Ella's age (12 years older than Sue)
And 3x = Lola's age (3 times Sue's age)<br>
The sum of their ages is 57:<br>
(x)+(x+12)+(3x)=57<br>
Solve for x using basic algebra.<br>
Then remember the question asks for Lola's age, which is 3x -- not just x.<br>