What is the cost of 90g of wool at 40p for 20g?

Answer 1

To find the cost of 90g of wool at 40p for 20g, first determine the cost per gram. The cost for 20g is 40p, so the cost per gram is 40p / 20g = 2p/g. For 90g, the cost would be 90g × 2p/g = 180p. Thus, the cost of 90g of wool is £1.80.