Ratio, proportion and rates of changeKey Stage 3

Comparing best buys

Compare equivalent products using their unit prices.

  • Find the price of one item in each pack.
  • Compare in the same currency and units.
  • The lower price per item is better value.

Example 1

Pack A contains identical pens for £5.00. Pack B contains of the same pens for £7.20. Decide which pack is better value.

Price per pen in pack A, in pounds.Price per pen in pack B, in pounds.

Example 2

Pack A contains identical pens for £4.00. Pack B contains of the same pens for £6.80. Decide which pack is better value.

Price per pen in pack A, in pounds.Price per pen in pack B, in pounds.

Remember
The lower price per item is better value.

Your turn

Question 1

Pack A contains identical pens for £7.98. Pack B contains of the same pens for £10.64. Decide which pack is better value.

Check answer
Price per pen in pack A, in pounds.Price per pen in pack B, in pounds.
Question 2

Pack A contains identical pens for £5.39. Pack B contains of the same pens for £12.15. Decide which pack is better value.

Check answer
Price per pen in pack A, in pounds.Price per pen in pack B, in pounds.
Question 3

Pack A contains identical pens for £7.44. Pack B contains of the same pens for £4.08. Decide which pack is better value.

Check answer
Price per pen in pack A, in pounds.Price per pen in pack B, in pounds.
Question 4

Pack A contains identical pens for £13.14. Pack B contains of the same pens for £5.65. Decide which pack is better value.

Check answer
Price per pen in pack A, in pounds.Price per pen in pack B, in pounds.
Question 5

Pack A contains identical pens for £4.02. Pack B contains of the same pens for £4.65. Decide which pack is better value.

Check answer
Price per pen in pack A, in pounds.Price per pen in pack B, in pounds.
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