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3 years ago

Devon is five years younger than Sydney the sum of their ages is 57 what is Sydney

Mathematics

1 answer:

Nikolay [14]3 years ago

3 0

Answer:

Sydney is 31 years old.

Step-by-step explanation:

LET age of Devon be x years

and let age of Sydney be y years

if x=y-5-------(i)

x+y= 57 (sum)

Using (i)

(y-5)+y=57

2y=62

y=31

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