Question

Your math teacher gives you an extra credit problem to figure out her age. Half of her age three years

ago is equal to one-third of her age nine years from now. How old is she currently?

Answer 1

Teacher is 27 years old

Explanation:

(1/2)(t - 3) = (1/3)(t + 9)

multiply by 6 to clear the fraction

3(t - 3) = 2(t + 9)

Distribute

3t - 9 = 2t + 18

Subtract 2t from both sides

t - 9 = 18

Add 9 to both sides

t = 27

Teacher is 27 years old