Lee has 3 children, the oldest is twice as old as the oungest, the middle is 5 years older than the youngest, the sum of the childrens agre is 57, how old is eaach child

Question

Mathematics

Zachery Yang

1 September, 14:20

Lee has 3 children, the oldest is twice as old as the oungest, the middle is 5 years older than the youngest, the sum of the childrens agre is 57, how old is eaach child

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Answers (2)

Know the Answer?

Oscar Arellano · Answer 1

Oldest sibling = 2x = 2 (13) = 26

Middle child = x + 5 = 13 + 5 = 18

Smallest kid = x = 13

Carleigh Caldwell · Answer 2

Oldest = 2x

Middle = x + 5

Youngest = x

2x + x + 5 + x = 57

combine like terms

4x + 5 = 57

subtract 5 from both sides

4x = 52

divide both sides by 4 to isolate x

x = 13

Oldest = 2x = 2 (13) = 26

Middle = x + 5 = 13 + 5 = 18

Youngest = x = 13