Dana is 7 years younger than Sam and Sam is 3 years younger than Alex. If the sum of their ages is 74, find each person's age.

Question

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Answer 1

Let Sam's age = x

Dana's age = x - 7

Alex's age = x + 3

 

x + (x - 7) + (x + 3) = 3x - 4 = 74

 

3x = 78

 

x = 26, so Sam is 26. Dana is 26 - 7 = 19. Alex is 26 + 3 = 29.