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.)

	Erstellt von abbylebus vor mehr als 11 Jahre

Maths Notiz am Best Buys, erstellt von abbylebus am 13/05/2013.