Pricing

I will use my favourite Yorkshire pudding recipe as an example. It requires 140g of plain flour, 4 eggs and 200ml of milk.

If we had nothing is the cupboard we would have to pay 40p + £1 + 58p = £1.98 to buy everything initially, but we would have ingredients left over. 

It is unlikely that each item will be purchased to the exact quantity. Often it is cheaper to buy in bulk for items that you will use a lot. We need to find the fraction of the package amount.

Quantity used____   x   cost of packet  = cost of item

Quantity in packet

We need 140g of Plain Flour and a 500g pack of flour costs 40p

140 x 40p = 11p

500

We also need 4 eggs and 6 eggs cost £1.

4 x 100p = 66p

6

Finally 200ml of milk, 58p is the cost for 1 pint (which is 568ml).

200 x 58p = 20p

568

Total Costs

Just add up the individual costs.

11p + 66p + 20p = 97p

Portion Costs

This makes 4 large yorkshire puddings, so divide the total cost by 4.

97p = 24p

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