Question

katie is three times as old as her son. if katie is 30 years older than her son, what are their ages?

Answer 1

Katie is 45 , her son is 15

Explanation:

let the sons age be x then Katies age is 3x ( three times as old )

she is also 30 years older than her son , that is x + 30

equate both expressions for her age and solve for x

3x = x + 30 ( subtract x from both sides )

2x = 30 ( divide both sides by 2 )

x = 15

that is her son is 15 and Katie is 3 × 15 = 45