josh7earl josh7earl

29-01-2017
Mathematics

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Devaughn is 15 years younger than Sydney. The sum of their ages is 85 . What is Sydney's age?

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cubicbook cubicbook

29-01-2017

Sydney’s age is 50.

Devaughn age: x-15 Sydney’s age: x

x-15+x = 85
2x-15 = 85
2x = 100
x = 50

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