Best Buy Problems Flashcards

Questions that involve comparing costs and quantities to determine the best value for money.

The cost of one unit of a product, calculated by dividing the total cost by the number of units.

Divide the total cost by the quantity (e.g., cost per kg, cost per litre).

To compare products with different sizes or quantities and find the best value.

1. Calculate the unit price for each option. 2. Compare the unit prices. 3. Choose the option with the lowest unit price.

If 3 kg of apples cost £6, the unit price is £6 ÷ 3 = £2 per kg.

Units such as per kg, per litre, per item, or per 100g are often used.

Convert all quantities to the same unit before comparing (e.g., grams to kilograms).

Include the discount in the total cost before calculating the unit price.

Be able to divide accurately and compare decimals to identify the lowest unit price.