Question 14
Julia enjoys making products from available materials and can sell them for money. The table gives their selling prices and the materials needed to make them.
| Product | Materials | Selling price |
| --- | --- | --- |
| Wheel | 1 tire, 1 iron tube | 1 coin |
| Bicycle | 2 wheels, 1 iron tube | 10 coins |
| Cart | 1 tire, 1 wooden bar | 5 coins |
| Tricycle | 1 wheel, 1 bicycle | 15 coins |
If Julia has 4 tires, 4 bags of iron and 1 box of wood, what is the greatest total value of products she can recycle?
**Approved unit clarification:** The original wording “4 bags of iron and 1 box of wood” is retained above. For the source’s intended interpretation, use 4 iron tubes and 1 wooden bar, together with 4 tires. The source gives no number of tubes per bag or bars per box.
| Product | Materials | Selling price |
| --- | --- | --- |
| Wheel | 1 tire, 1 iron tube | 1 coin |
| Bicycle | 2 wheels, 1 iron tube | 10 coins |
| Cart | 1 tire, 1 wooden bar | 5 coins |
| Tricycle | 1 wheel, 1 bicycle | 15 coins |
If Julia has 4 tires, 4 bags of iron and 1 box of wood, what is the greatest total value of products she can recycle?
**Approved unit clarification:** The original wording “4 bags of iron and 1 box of wood” is retained above. For the source’s intended interpretation, use 4 iron tubes and 1 wooden bar, together with 4 tires. The source gives no number of tubes per bag or bars per box.