María has three children. There is a two years age difference between each child. The total ages of all three children is 36 years. Rosa is the oldest child. How old is Rosa? Let R = the age of rosa.

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Mathematics

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3 November, 04:32

María has three children. There is a two years age difference between each child. The total ages of all three children is 36 years. Rosa is the oldest child. How old is Rosa? Let R = the age of rosa.

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Answers (2)

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Xavier Townsend · Answer 1

The ages of the children are:

R, R-2 and R-4.

Together they are R + R-2 + R-4 = 36. This is an equation we can solve.

3R - 6 = 36 = > 3R = 42 = > R = 14

So the ages are 10, 12 and 14

Marquis Mckinney · Answer 2

R-2 is age of the second child

R-4 is age of third child

R-2+R-4+R=36

3R = 36+6=42

R=14