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Age and Coin Puzzles Worksheet

Maths tricks trick 14: Age and coin puzzles · Set 10 · 40 questions
TalentJR

The trick (Pretend and adjust): Ages: find each age now, then add (later) or take away (earlier) the same years for everyone. Coins: pretend all coins are ₹1; the extra money tells you how many ₹2 coins there are. Check your answer by putting it back into the riddle.

NameDateTime takenScore ___ / 40
  1. 1.A father is 40 years old and his son is 4. How old was the father when the son was born?
  2. 2.You have 10 coins. Each coin is ₹1 or ₹2, and together they make ₹19. How many ₹2 coins do you have?
  3. 3.You have 5 coins. Each coin is ₹1 or ₹2, and together they make ₹6. How many ₹2 coins do you have?
  4. 4.A father is 32 years old and his son is 11. How old was the father when the son was born?
  5. 5.A girl is 11 years old and her brother is 6 years older. How old will her brother be in 6 years?
  6. 6.A girl is 7 years old and her brother is 3 years older. How old will her brother be in 7 years?
  7. 7.The ages of two twins add up to 8. How old is each twin?
  8. 8.A father is 43 years old and his son is 8. How old was the father when the son was born?
  9. 9.The ages of two twins add up to 30. How old is each twin?
  10. 10.In 3 years a boy will be 11 years old. How old was he 3 years ago?
  11. 11.A girl is 10 years old and her brother is 3 years older. How old will her brother be in 2 years?
  12. 12.A father is 44 years old and his son is 6. How old was the father when the son was born?
  13. 13.You have 6 coins. Each coin is ₹1 or ₹2, and together they make ₹11. How many ₹2 coins do you have?
  14. 14.You have 14 coins. Each coin is ₹1 or ₹2, and together they make ₹27. How many ₹2 coins do you have?
  15. 15.In 6 years a boy will be 18 years old. How old was he 7 years ago?
  16. 16.The ages of two twins add up to 10. How old is each twin?
  17. 17.A piggy bank has 6 coins of ₹5 and 5 coins of ₹2. How many rupees are in it?
  18. 18.A father is 34 years old and his son is 13. How old was the father when the son was born?
  19. 19.A father is 34 years old and his son is 10. How old was the father when the son was born?
  20. 20.A father is 32 years old and his son is 12. How old was the father when the son was born?
  21. 21.The ages of two twins add up to 18. How old is each twin?
  22. 22.You have 8 coins. Each coin is ₹1 or ₹2, and together they make ₹15. How many ₹2 coins do you have?
  23. 23.A girl is 5 years old and her brother is 5 years older. How old will her brother be in 8 years?
  24. 24.A girl is 10 years old and her brother is 6 years older. How old will her brother be in 4 years?
  25. 25.You have 6 coins. Each coin is ₹1 or ₹2, and together they make ₹8. How many ₹2 coins do you have?
  26. 26.A father is 30 years old and his son is 6. How old was the father when the son was born?
  27. 27.A father is 32 years old and his son is 4. How old was the father when the son was born?
  28. 28.In 4 years a boy will be 13 years old. How old was he 5 years ago?
  29. 29.You have 12 coins. Each coin is ₹1 or ₹2, and together they make ₹16. How many ₹2 coins do you have?
  30. 30.A girl is 5 years old and her brother is 6 years older. How old will her brother be in 2 years?
  31. 31.The ages of two twins add up to 12. How old is each twin?
  32. 32.A girl is 7 years old and her brother is 4 years older. How old will her brother be in 5 years?
  33. 33.The ages of two twins add up to 22. How old is each twin?
  34. 34.A girl is 7 years old and her brother is 6 years older. How old will her brother be in 2 years?
  35. 35.You have 5 coins. Each coin is ₹1 or ₹2, and together they make ₹8. How many ₹2 coins do you have?
  36. 36.A father is 32 years old and his son is 8. How old was the father when the son was born?
  37. 37.A father is 31 years old and his son is 5. How old was the father when the son was born?
  38. 38.A girl is 9 years old and her brother is 4 years older. How old will her brother be in 2 years?
  39. 39.A father is 32 years old and his son is 13. How old was the father when the son was born?
  40. 40.A girl is 6 years old and her brother is 6 years older. How old will her brother be in 5 years?

Answer key

  1. 36
  2. 9
  3. 1
  4. 21
  5. 23
  6. 17
  7. 4
  8. 35
  9. 15
  10. 5
  11. 15
  12. 38
  13. 5
  14. 13
  15. 5
  16. 5
  17. 40
  18. 21
  19. 24
  20. 20
  21. 9
  22. 7
  23. 18
  24. 20
  25. 2
  26. 24
  27. 28
  28. 4
  29. 4
  30. 13
  31. 6
  32. 16
  33. 11
  34. 15
  35. 3
  36. 24
  37. 26
  38. 15
  39. 19
  40. 17

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