In a family, a couple has a son and a daughter. The age of the father is three times that of his daughter and the age of the son is half of that of his mother. The wife is 9 years younger to her husband and the brother is seven years older than his sister. What is the age of the mother ?  Choices
A) 40 years B) 45 years C) 50 years D) 60 years E) 70 years
let daughter age x then father age will be 3x   let mother age is y then son age will be y/2   accor. to que.   3x-y=9 ....................1   y/2-x=7 =&gt;2x-y = -14......2   solve the both eqe.   y=60   ANSWER:60 years
<result>D</result>
In a family, a couple has a son and a daughter. The age of the father is three times that of his daughter and the age of the son is half of that of his mother. The wife is 9 years younger to her husband and the brother is seven years older than his sister. What is the age of the mother ?