1.9 Pract ice - Age Pro blems
1. A boy is 10 years older than his brother. In 4 years he will be twice as old as
his brother. Find the present age of each.
2. A father is 4 times as old as his son. In 20 years the father will be twice as old
as his son. Find the present age of each.
3. Pat is 20 years older than his son James. In two years Pat will be twice as old
as James. How old are they now?
4. Diane is 23 years older tha n her daughter Amy. In 6 years Diane will be twice
as old as Amy. How old are they now?
5. Fred is 4 years older than Barney. Five years ago the sum of their ages was 48.
How old are they now?
6. John is four time s as old as Martha. Five years ago the sum of their ages was
50. How old are they now?
7. Tim is 5 years older than JoAnn. Six years from now the sum of their ages will
be 79. How old are they now?
8. Jack is twice as old as Lacy. In three years the sum of their ages will be 54.
How old are they now?
9. The sum of the ag es of John and M ary is 32. Four years ago, John was twice
as old as Mary. Find the present age of ea ch.
10. The sum of the ages of a father and son is 5 6. Four years ago the father was 3
times as old as the son. Find the present a ge of each.
11. The sum of the ages of a china plate and a glass plate is 16 years. Four years
ago the china plate was three times the age of the glass plate. Find the
1
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present age of each plate.
12. The sum of the ages of a wood plaque and a bronze plaque is 20 years. Four
years ago, the bronze plaque was one-half the age of the wood plaque. Find
the present age of each plaque.
13. A is now 34 years old, and B is 4 years old. In how many years will A be
twice as old as B?
14. A man’s age is 36 and that of his daughter is 3 years. In how ma ny years will
the man be 4 times a s old as h is daughter?
15. An Oriental rug is 52 years old and a Persian rug is 16 years old. How many
years ago was the Oriental rug four times as o ld as the Persian Rug?
16. A log cabin quilt is 24 years old and a friendship quilt is 6 years old. In how
may years will the log cabin quilt be three times as old as the friendship
quilt?
17. The age of the older of two boys is twice that of the younger; 5 years ago it
was three times that of the younger. Find the age of each.
18. A pitcher is 30 years o ld, and a vase is 22 years old. How many years ago was
the pitcher twice as old as the vase?
19. Marge is twice as old as C onsuelo. The sum of their a ges seven years ago was
13. How old are they now?
20. The sum of Jason and Mandy’s age is 35. Ten years ago Jason was double
Mandy’s age. How old are they now?
21. A silver coin is 2 8 years older than a bronze coin. In 6 years, the silver coin
will be twice as old a s the bronze coin. Find the present age o f each coin.
22. A sofa is 12 years old and a table is 36 years old. In how many years will th e
table be twice as old as the sofa?
23. A limeston e statue is 56 years older than a marble statue. In 12 years, the
limestone will be three times as old as the marble statue. Find the present age
of the statues.
24. A pe wter bowl is 8 years old, and a s ilver bowl is 22 years old . In how many
years will the silver bowl be twice the age of the pewter bowl?
25. Brandon is 9 years older than R onda. In four years the sum of their ages will
be 91. How old are they now?
26. A kerosene lamp is 95 years old, and an electric lamp is 55 years old. How
2
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Saylor Course: http://www.saylor.org/courses/ma001/
many years ago was the kerosene lamp twice the age of the electric lamp?
27. A father is three times as old as his son, and his daughter is 3 years younger
than the son. If the sum of their ages 3 years ago was 63 years, find the
present age of the fa ther.
28. The sum of Clyde a nd Wendy’s age is 64. In four years, Wendy will be three
times as old as Clyde. How old are they now?
29. The sum of the ages of two ships is 12 years. Two years ago, the ag e o f the
older ship was three times the age of the newer ship. Find the present age of
each ship.
30. Chelsea’s age is do uble Daniel’s age. Eig ht years ago the sum of their ages
was 32. How old are they now?
31. Ann is eighteen years older than her son. One year ago, she was three times
as old as her son. How old are they now?
32. The sum of the ages of Kristen and Ben is 32. Four years ago Kristen was
twice as old as Ben. How old are they both now?
33. A mosaic is 74 years older t ha n the engraving. Thirty years ago, the mosaic
was three times as old as the engraving. Find the present a ge of each.
34. The sum of the ages of Elli and D an is 56. Four years ago Elli was 3 times as
old as Dan. How old are they now?
35. A wool tapestry is 32 years older than a linen tapestry. Twenty years ago, the
wool tapestry was twice as o ld as the linen tapestry. Find the present age of
each.
36. Carolyn’s ag e is triple her daughter’s age. In eight years the sum of their ag es
will be 72. How old are they now?
37. Nicole is 26 years old. Emma is 2 years old. In how many years will Nicole be
triple Emma’s age?
38. The sum of the ages of two children is 16 years. Four years ago, the age of the
older child was three times the age of th e younger child. Find the present age
of each child.
39. Mike is 4 years older than Ron. In two years, the sum of their ages w ill be 84.
How old are they now?
40. A marble bust is 25 years old, and a terra-cotta bust is 85 years old. In how
many years will the terra-cotta bust be three times as old as the marble bust?
Beginning and Intermediate Algebra by Tyler Wallace is licensed under a Creative Commons
Attribution 3.0 Unported License. (http://creativecommons.org/licenses/by/3.0/)
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Source: http://www.wallace.ccfaculty.org/book/book.html
Saylor Course: http://www.saylor.org/courses/ma001/
1.9
Answers - Age Proble ms
1) 6, 16
2) 10, 40
3) 18, 38
4) 17, 40
5) 27, 31
6) 12, 48
7) 31, 36
8) 16, 32
9) 12, 20
10) 40, 16
11) 10, 6
12) 12, 8
13) 26
14) 8
15) 4
16) 3
17) 10, 20
18) 14
19) 9, 18
20) 15, 20
21) 50, 22
22) 12
23) 72, 16
24) 6
25) 37, 46
26) 15
27) 45
28) 14, 54
29) 8, 4
30) 16, 32
31) 10, 28
32) 12,20
33) 141, 67
34) 16, 40
35) 84, 52
36) 14, 42
37) 10
38) 10, 6
39) 38, 42
40) 5
Beginning and Intermediate Algebra by Tyler Wallace is licensed under a Creative Common s
Attribution 3.0 Unported License. (http://creativecommons.org/licenses/by/3.0/)
4
Source: http://www.wallace.ccfaculty.org/book/book.html
Saylor Course: http://www.saylor.org/courses/ma001/
