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04-02-2020
Mathematics

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

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05-02-2020

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.

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