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

2 Answers
Feb 25, 2018

Sarah is 40 and Gavin is 15

Explanation:

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

Feb 25, 2018

Below.

Explanation:

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.