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Age and Coin Puzzles Worksheet

Maths tricks trick 14: Age and coin puzzles · Set 502 · 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.You have 9 coins. Each coin is ₹1 or ₹2, and together they make ₹12. How many ₹2 coins do you have?
  2. 2.You have 12 coins. Each coin is ₹1 or ₹2, and together they make ₹17. How many ₹2 coins do you have?
  3. 3.A girl is 9 years old and her brother is 5 years older. How old will her brother be in 7 years?
  4. 4.The ages of two twins add up to 10. How old is each twin?
  5. 5.A father is 45 years old and his son is 8. How old was the father when the son was born?
  6. 6.The ages of two twins add up to 14. How old is each twin?
  7. 7.A girl is 7 years old and her brother is 6 years older. How old will her brother be in 8 years?
  8. 8.In 5 years a boy will be 13 years old. How old was he 4 years ago?
  9. 9.In 6 years a boy will be 19 years old. How old was he 6 years ago?
  10. 10.A father is 41 years old and his son is 9. How old was the father when the son was born?
  11. 11.A father is 37 years old and his son is 14. How old was the father when the son was born?
  12. 12.You have 5 coins. Each coin is ₹1 or ₹2, and together they make ₹6. How many ₹2 coins do you have?
  13. 13.In 3 years a boy will be 12 years old. How old was he 3 years ago?
  14. 14.In 4 years a boy will be 12 years old. How old was he 6 years ago?
  15. 15.A girl is 10 years old and her brother is 4 years older. How old will her brother be in 9 years?
  16. 16.You have 15 coins. Each coin is ₹1 or ₹2, and together they make ₹22. How many ₹2 coins do you have?
  17. 17.A father is 42 years old and his son is 4. How old was the father when the son was born?
  18. 18.A father is 38 years old and his son is 7. How old was the father when the son was born?
  19. 19.You have 10 coins. Each coin is ₹1 or ₹2, and together they make ₹13. How many ₹2 coins do you have?
  20. 20.In 2 years a boy will be 13 years old. How old was he 2 years ago?
  21. 21.A piggy bank has 8 coins of ₹5 and 2 coins of ₹2. How many rupees are in it?
  22. 22.You have 6 coins. Each coin is ₹1 or ₹2, and together they make ₹11. How many ₹2 coins do you have?
  23. 23.You have 11 coins. Each coin is ₹1 or ₹2, and together they make ₹17. How many ₹2 coins do you have?
  24. 24.In 6 years a boy will be 19 years old. How old was he 2 years ago?
  25. 25.A girl is 8 years old and her brother is 3 years older. How old will her brother be in 4 years?
  26. 26.A girl is 7 years old and her brother is 6 years older. How old will her brother be in 2 years?
  27. 27.In 5 years a boy will be 17 years old. How old was he 6 years ago?
  28. 28.A piggy bank has 5 coins of ₹5 and 4 coins of ₹2. How many rupees are in it?
  29. 29.The ages of two twins add up to 12. How old is each twin?
  30. 30.A piggy bank has 3 coins of ₹5 and 2 coins of ₹2. How many rupees are in it?
  31. 31.A father is 36 years old and his son is 9. How old was the father when the son was born?
  32. 32.The ages of two twins add up to 20. How old is each twin?
  33. 33.A father is 40 years old and his son is 6. How old was the father when the son was born?
  34. 34.You have 12 coins. Each coin is ₹1 or ₹2, and together they make ₹13. How many ₹2 coins do you have?
  35. 35.A piggy bank has 9 coins of ₹5 and 14 coins of ₹2. How many rupees are in it?
  36. 36.A piggy bank has 7 coins of ₹5 and 5 coins of ₹2. How many rupees are in it?
  37. 37.A piggy bank has 3 coins of ₹5 and 3 coins of ₹2. How many rupees are in it?
  38. 38.A girl is 12 years old and her brother is 5 years older. How old will her brother be in 4 years?
  39. 39.In 6 years a boy will be 18 years old. How old was he 2 years ago?
  40. 40.In 3 years a boy will be 17 years old. How old was he 4 years ago?

Answer key

  1. 3
  2. 5
  3. 21
  4. 5
  5. 37
  6. 7
  7. 21
  8. 4
  9. 7
  10. 32
  11. 23
  12. 1
  13. 6
  14. 2
  15. 23
  16. 7
  17. 38
  18. 31
  19. 3
  20. 9
  21. 44
  22. 5
  23. 6
  24. 11
  25. 15
  26. 15
  27. 6
  28. 33
  29. 6
  30. 19
  31. 27
  32. 10
  33. 34
  34. 1
  35. 73
  36. 45
  37. 21
  38. 21
  39. 10
  40. 10

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