Sarah is 25 years older than her son Gavin. In ten years, Sarah will be twice Gavin age. How old are Sarah and Gavin?

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Answer 1 · 2018-02-25T04:01:22

Sarah is 40 and Gavin is 15

Let (G+25) be Sarah's age and G be Gavin's age
#S= G+25#
#G+25=2(G+10)#
#G=15#
#S=40#

Answer 2 · 2018-02-25T04:16:28

Below.

Let Garvin's age be #=x# and Sarah's age #=x +25#

After #10# years

Garvin's age #= x + 10#
Sarah's age #= 2(x +10) or x+ 35#

According to the question

#2 (x + 10 ) = x + 35#

#2x + 20 = x + 35#

#2x-x = 35-20#

#x = 15#

Therefore, Gavin's age is #15# years and Sarah's age is #40# years.