Age Calculation (Finding Age)
We determine the age by utilizing the fact that the age difference does not change over time.
| The child’s current age Years | |
| Current parent’s age Years |
If the parent’s current age is n times the child’s age,
and the parent’s age a years from now will be m times the child’s age,
(1) The child’s current age = (m – 1) / (n – m) × a
(2) The parent’s current age = n × (m - 1) / (n - m) × a
and the parent’s age a years from now will be m times the child’s age,
(1) The child’s current age = (m – 1) / (n – m) × a
(2) The parent’s current age = n × (m - 1) / (n - m) × a
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