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Kylan is four times as old as Ella. Quentin is one year younger than Kylan and five years older than Ella.
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Let x be the Ella's age, in years.
Then Kylan age is 4x years.
Quentin age is, from one side, 4x-1 years,
and from the other side, x+5 years.
It gives this equation
4x - 1 = x + 5.
Solve it, step by step
4x - x = 5 + 1
3x = 6
x = 6/3 = 2.
ANSWER. Ella is 2 years old; Kylan is 4*2 = 8 years old; Quentin is 8-1 = 7 years old.
Solved.