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Age and Coin Puzzles Worksheet

Maths tricks trick 14: Age and coin puzzles · Set 117 · 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 13 coins. Each coin is ₹1 or ₹2, and together they make ₹17. How many ₹2 coins do you have?
  2. 2.You have 15 coins. Each coin is ₹1 or ₹2, and together they make ₹26. How many ₹2 coins do you have?
  3. 3.A father is 30 years old and his son is 10. How old was the father when the son was born?
  4. 4.A father is 32 years old and his son is 14. How old was the father when the son was born?
  5. 5.A father is 31 years old and his son is 4. How old was the father when the son was born?
  6. 6.A father is 40 years old and his son is 13. How old was the father when the son was born?
  7. 7.In 6 years a boy will be 14 years old. How old was he 4 years ago?
  8. 8.In 3 years a boy will be 11 years old. How old was he 5 years ago?
  9. 9.A girl is 8 years old and her brother is 5 years older. How old will her brother be in 2 years?
  10. 10.A piggy bank has 12 coins of ₹5 and 12 coins of ₹2. How many rupees are in it?
  11. 11.You have 15 coins. Each coin is ₹1 or ₹2, and together they make ₹28. How many ₹2 coins do you have?
  12. 12.The ages of two twins add up to 16. How old is each twin?
  13. 13.In 3 years a boy will be 14 years old. How old was he 3 years ago?
  14. 14.A girl is 9 years old and her brother is 2 years older. How old will her brother be in 3 years?
  15. 15.A piggy bank has 4 coins of ₹5 and 7 coins of ₹2. How many rupees are in it?
  16. 16.A father is 42 years old and his son is 12. How old was the father when the son was born?
  17. 17.A girl is 11 years old and her brother is 4 years older. How old will her brother be in 5 years?
  18. 18.The ages of two twins add up to 14. How old is each twin?
  19. 19.In 5 years a boy will be 13 years old. How old was he 4 years ago?
  20. 20.A girl is 8 years old and her brother is 2 years older. How old will her brother be in 5 years?
  21. 21.The ages of two twins add up to 20. How old is each twin?
  22. 22.A girl is 6 years old and her brother is 2 years older. How old will her brother be in 3 years?
  23. 23.You have 15 coins. Each coin is ₹1 or ₹2, and together they make ₹24. How many ₹2 coins do you have?
  24. 24.The ages of two twins add up to 10. How old is each twin?
  25. 25.A girl is 12 years old and her brother is 2 years older. How old will her brother be in 4 years?
  26. 26.You have 9 coins. Each coin is ₹1 or ₹2, and together they make ₹12. How many ₹2 coins do you have?
  27. 27.A father is 37 years old and his son is 9. How old was the father when the son was born?
  28. 28.A piggy bank has 12 coins of ₹5 and 9 coins of ₹2. How many rupees are in it?
  29. 29.A piggy bank has 2 coins of ₹5 and 2 coins of ₹2. How many rupees are in it?
  30. 30.A girl is 8 years old and her brother is 5 years older. How old will her brother be in 4 years?
  31. 31.You have 5 coins. Each coin is ₹1 or ₹2, and together they make ₹9. How many ₹2 coins do you have?
  32. 32.A piggy bank has 3 coins of ₹5 and 12 coins of ₹2. How many rupees are in it?
  33. 33.A father is 44 years old and his son is 11. How old was the father when the son was born?
  34. 34.A girl is 7 years old and her brother is 3 years older. How old will her brother be in 4 years?
  35. 35.You have 15 coins. Each coin is ₹1 or ₹2, and together they make ₹23. How many ₹2 coins do you have?
  36. 36.In 4 years a boy will be 14 years old. How old was he 2 years ago?
  37. 37.In 3 years a boy will be 11 years old. How old was he 2 years ago?
  38. 38.A father is 42 years old and his son is 10. How old was the father when the son was born?
  39. 39.A father is 36 years old and his son is 6. How old was the father when the son was born?
  40. 40.You have 5 coins. Each coin is ₹1 or ₹2, and together they make ₹6. How many ₹2 coins do you have?

Answer key

  1. 4
  2. 11
  3. 20
  4. 18
  5. 27
  6. 27
  7. 4
  8. 3
  9. 15
  10. 84
  11. 13
  12. 8
  13. 8
  14. 14
  15. 34
  16. 30
  17. 20
  18. 7
  19. 4
  20. 15
  21. 10
  22. 11
  23. 9
  24. 5
  25. 18
  26. 3
  27. 28
  28. 78
  29. 14
  30. 17
  31. 4
  32. 39
  33. 33
  34. 14
  35. 8
  36. 8
  37. 6
  38. 32
  39. 30
  40. 1

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