Question

Devaughn is 15 years younger than Sydney. The sum of their ages is 25. What is Sydney's age?

Answer 1

Answer:

  20

Step-by-step explanation:

Let Sydney's age be represented by s. Then the sum of the two ages is ...

  s + (s-15) = 25

  2s = 40 . . . . . . add 15

  s = 20 . . . . . . . divide by 2

Sydney's age is 20.