math

A. John is now 10 years older than Marcus. Three times John's age 5 years from now will be the same as five times Marcus's age 5 years ago. How old is John now?

B. In 1 year Kristen will be four times as old as Danielle. Ten years from then Kristen will only be twice as old as Danielle. How old is Kristen now?

C. A woman was 30 years old when her daughter was born.Her age is now 6 years more than three times her daughter's age. How old will the daughter be in 5 years?

asked by gary
  1. 1. John is now 45 years old.

    45 (John) ---- 50 X 3 = 150
    35 (Marcus) ---- 30 X 5 = 150



    posted by Anonymous
  2. thank you

    posted by gary
  3. john's present age is at least three times as great as his age 10 years ago. Find the greatest possible age of john at present

    posted by Anonymous
  4. A.
    J=10 + M
    3J +5=5M-5
    3(10+M)+5=5M-5
    30+3M+5=5M-5
    2M=40
    M=20

    J=10+M=30

    posted by Rachel

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