Age and Coin Puzzles Worksheet

Maths tricks trick 14: Age and coin puzzles · Set 11 · 40 questions

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.

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

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