Question 1112847: I am half the age of my older brother who is two years older than my sister. My sister is four years older than me. How old am I ? Found 2 solutions by ikleyn, greenestamps:Answer by ikleyn(52781) (Show Source):
I am x years old; my brother is 2x years old; my sister is 2x - 2 years old and
the last statement of the condition says
x = (2x-2) -4 ("My sister is four years older than me.").
x = 2x - 6 ====> x = 6.
Answer. I am 6 years old.
The brother is 12 years old.
The sister is 10 years old.
Everything is consistent with the condition.