age | MathCelebrity Forum

age

  1. math_celebrity

    In 16 years, Ben will be 3 times as old as he is right now.

    In 16 years, Ben will be 3 times as old as he is right now. Let Ben's age right now be b. We have, in 16 years, Ben's age will be 3 times what his age is now: b + 16 = 3b Subtract b from each side: 2b = 16 Divide each side by 2 b = 8 Check our work: 16 years from now, Ben's age is 8 + 16 =...
  2. math_celebrity

    Bill is p years old. How old will he be in 10 years? How old was he 5 years ago?

    Bill is p years old. How old will he be in 10 years? How old was he 5 years ago? In 10 years, Bill will be p + 10 5 years ago, Bill was p - 5
  3. math_celebrity

    Ashley age is 2 times Johns age. The sum of their ages is 63. What is Johns age?

    Ashley age is 2 times Johns age. The sum of their ages is 63. What is Johns age? Let Ashley's age be a. Let John's age be j. We have two equations: a = 2j a + j = 63 Now substitute (1) into (2) (2j) + j = 63 Combine like terms: 3j = 63 Typing 3j = 63 into our search engine, we get j = 21
  4. math_celebrity

    In 45 years, Gabriela will be 4 times as old as she is right now.

    In 45 years, Gabriela will be 4 times as old as she is right now. Let a be Gabriela's age. we have: a + 45 = 4a Subtract a from each side: 3a = 45 Divide each side by a a = 15
  5. math_celebrity

    Chris, Alex and Jesse are all siblings in the same family. Alex is 5 years older than chris. Jesse i

    Chris, Alex and Jesse are all siblings in the same family. Alex is 5 years older than chris. Jesse is 6 years older than Alex. The sum of their ages is 31 years. How old is each one of them? Set up the relational equations where a = Alex's age, c = Chris's aged and j = Jesse's age a = c + 5 j...
  6. math_celebrity

    A woman dies at the age of 100 and her son is 35 years old how old was she when she gave birth to hi

    A woman dies at the age of 100 and her son is 35 years old how old was she when she gave birth to him. 35 years ago meant she was 100 - 35 = 65 years.
  7. math_celebrity

    Marty is 3 years younger than 6 times his friend Warrens age. The sum of their ages is greater than

    Marty is 3 years younger than 6 times his friend Warrens age. The sum of their ages is greater than 11. What is the youngest age Warren can be? Let m be Marty's age and w be Warren's age. We have two equations: (1) m = 6w - 3 (2) m + w > 11 Plug (1) into (2) 6w - 3 + w > 11 Combine w terms 7w...
  8. math_celebrity

    Ricks age increased by 24 is 69

    Let a be Rick's age We have a + 24 = 69 Subtract 24 from each side a = 45
  9. math_celebrity

    Katie is twice as old as her sister Mara. The sum of their age is 24.

    Let k = Katie's age and m = Mara's age. We have 2 equations: (1) k = 2m (2) k + m = 24 Substitute (1) into (2) (2m) + m = 24 Combine like terms: 3m = 24 Divide each side of the equation by 3 to isolate m m = 8 If m = 8, substituting into (1) or (2), we get k = 16.
  10. math_celebrity

    My son is 9 less than 1/2 my age. If I am 34 how old is my son?

    1/2 of the parent age is 34/2 = 17. 9 less than that is 17 - 9 = 8. The son is 8 years old. You can also write this as 1/2(34) - 9 --> 17 - 9 = 8.
Back
Top