Problem Solving Answers

1. The library had 4328 books at the end of the year.
2. The grandstand has 22 000 seats.
3. There would be 18 different poossible combinations of laptops, software and bags.
4. $970, 200 would be taken in total for the year.
5. David's father would overtake at 11 a.m. after travelling for 120 kilometres.
6. Five boxes of powder remain.
7. a. 16, 19 and the fifteenth term is 46.
b.24, 35 and the fifteenth term is 224.
8. 25 and the numbers are all square numbers.
9. 22 rows of chairs will be needed.
10. 40% of the juniors are girls.
11. Jane has $52.50.
12. The Smith family will get $39 change.
13. Each supermarket gets 160 loaves.
14. She has 125 Canadian stamps.
15. She arrived in town at 8.23 p.m.
16. 2100 spoons would be made by 25 machines in 7 hours.
17. Each of Mrs Jones's children receives 1/12 of the original cake.
18. He could supply carrots for about 33 weeks.
19. The number would be 5.
20. He eats an average of 14 chocolates per day.
21. 7/15 of the original passengers remain.
22. It would cost $300 to hire the car.
23. New Year's Eve. (31 December)
24. The Australian score was 157 after 38 overs.
25. There were 216 people at the reunion.