Algebra

Sipho is 4 older than his sister, their combined age is 18. How old is sipho

  1. 👍
  2. 👎
  3. 👁
  1. sister ---- x
    Sipho ---- x+4
    " their combined age is 18" , what does "combined" insinuate ?
    Form the resulting equation and solve for x

    1. 👍
    2. 👎
  2. s + s + 4 = 18

    2s = 14

    s = 7 (sister's age)

    1. 👍
    2. 👎
    👤
    Ms. Sue

Respond to this Question

First Name

Your Response

Similar Questions

  1. Algebra

    tony and his sister maria have the same birthday but tony is five years older than maria let the varible x represent tonys age and y represent maris age. which graph represents the relationship between tons age and marias age?

  2. Chemistry

    Now consider just the second sentence of the multistep word problem. Sentence 2: If four times the brother's age is subtracted from three times the sister's age, the difference is 16. Give an equation that represents this

  3. Math

    The sum of the ages of a brother and sister is 27. If four times the brother's age is subtracted from three times the sister's age, the difference is 11. Express your answer in terms of the symbols b and s. 27=?

  4. Math

    I am three years younger than my brother, and i am 2 years older than my sister. My mom's age is one less than three times my brother's age. When you add all our ages, you get 87. What are our ages?

  1. Math

    Ace's grandfather is 3 years older than Ace's grandmother. Their combined age is 121 years. How old is each?

  2. Math

    A girl is three years older than her brother. If their combined age is 35 years, how old is each?

  3. English

    Which statement is punctuated correctly? A. Selena, started playing hockey, her favorite sport when she was seven because her older sister was a star goalie. B. Selena started playing hockey, her favorite sport when she was seven

  4. thomas nhlabathi high school

    Sipho is 6 years older than Betty. in 3 years time Sipho will be twice as old as Betty. how old is Sipho now.

  1. Math

    Your brother is 1/3 your age. Your sister is 6 years older than your brother. Your sister is 10 years old. Write and solve an equation to find your age aa.

  2. Algebra

    john is three times as old as Greg, and Greg is half the age of Bob, Steve is two times the age of John and Bob combined. if Steve's age is 60, how old is Greg's older cousin Jane, who is two years older than Greg?

  3. maths

    my brother is 6 years older than i am our combined age is half the age of our grandfather.our grandfather is 68 years old how old am i

  4. Math

    Jean is seven years older than her brother Bob if he is three years older than their sister Mary. If the sum of their ages is 40 Siri how old is each you must set up an equation, solve and explain each step

You can view more similar questions or ask a new question.