The Smith family has three children: Tom, John, and Andy. Tom is younger than Andy. John is not older than Tom. From youngest to oldest, how are the children ordered by age?

Question

Mathematics

Isabelle Rhodes

19 July, 15:13

The Smith family has three children: Tom, John, and Andy. Tom is younger than Andy. John is not older than Tom. From youngest to oldest, how are the children ordered by age?

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Answers (1)

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Paul Fisher · Answer 1

Age of tom=t

age of john=j

age of andy=a

t
if j is not older than t, then he is less than or equal to t so

j ≤ t

but there is an oldest so therefor we assume that j < t

t < a

j < t

subsitute

j
andy is oldest

tom is second

john is youngest