Best Buys

Many products are sold in different sized boxes. For example, a supermarket may have different sized boxes of cornflakes. It's important to be able to work out which is the best value for money.

Example
The same brand of cornflakes is sold in three different sized packets. Which packet represents the best value for money?

500g is £1.69; 1g costs 169p / 500= 0.338p
750g is £2.13; 1g costs 213p / 750= 0.284p
1kg is £2.59; 1g costs 259p / 1000= 0.259p

Since the 1kg packet costs less per gram it is the best value for money.
(An alternative method for this example would be to work out the cost of 250g.)

	Created by abbylebus over 11 years ago

Maths Note on Best Buys, created by abbylebus on 13/05/2013.