Best value is all about comparing the value of two objects.
Im sure you've all been to a supermarket and seen the different sizes of products that come in all difference sizes. The question is, which one should you buy?
The key to solving these problems is finding the cost of 1 of the objects.
Example: A pack of 4 toilet rolls cost £2.16 and a pack of 9 costs £4.77. Which is better value?
We need to find the cost of 1 roll for each.
4 rolls cost 216 p so 1 costs 54 p (Divide by 4)
9 rolls cost 477 p so 1 costs 53 p (Divide by 9)
As the 9 rolls cost 53 p per roll, this is the best value.