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Best Buy Comparisons
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Best Buy Comparisons
Compare prices using a consistent unit. Show your calculations, include units in your answers, and round money to the nearest penny where needed.
Finding unit prices
1.A 900 g bag of granola costs £4.05. Calculate its price per 100 g.
2.A 1.5 litre bottle of lemonade costs £2.55. Calculate the price per litre.
3.A pack of 8 yoghurt pots costs £3.36. Find the cost of one pot.
4.Three bags of rice are on offer. Which is the best value per kilogram: 750 g for £1.65, 1.2 kg for £2.52, or 2 kg for £4.30? Give the unit price for each and identify the best buy.
Comparing shopping deals
5.Three packs of batteries are available: 4 batteries for £3.20, 10 for £7.50, and 16 for £11.68. Which pack has the lowest cost per battery? Show the unit cost of all three.
6.A 300 ml bottle of shampoo costs £2.70, a 500 ml bottle costs £4.10, and an 800 ml bottle costs £7.04. Calculate each price per 100 ml and state which bottle is best value.
Offers and value for money
7.A box of tea normally costs £5.60. A promotion offers three boxes for the price of two. What is the effective price per box if you buy three?
8.A 12-month mobile plan costs £22 per month and includes 4 GB of data each month. A second plan costs £31 per month and includes 7 GB each month. Calculate the total annual cost and annual data allowance for each plan, then compare the cost per GB over the year. Which plan gives better value for data?
9.Two shops sell the same 750 g coffee. Shop A charges £6.45. Shop B charges £5.80, but travelling to Shop B costs an extra £1.20 in bus fare. If you buy one bag, which option costs less overall, and by how much?
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