Question

Linear equation


Gina is 3 years older than Susan. The sum of their ages is 12 years more than Susan’s age. How old is Susan ?

Answer 1

Answer:

Susan = x

Gina = 3x

Sum of their ages = 12

Susan's age = ?

We can see that,

$2x=10

x = \frac{10}{2}x=

2

10

x = 5x=5$

Susan is 3 years old.