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Year 8 Best Buys and Unit Prices Worksheet — Level 2 — Practice Set 4 — Answers

Answer sheet with worked solutions for the Year 8 ratio & rates worksheet.

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Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Ratio & Rates

Year 8 Best Buys and Unit Prices Worksheet — Level 2 — Practice Set 4 — Answers

Find the price for the same amount of each (the unit price), then compare. Show your working.

1.Which is better value: rice at $5.40 for 1 kg, or at $11.80 for 2 kg?

Answer: $5.40 for 1 kg ($0.54 per 100 g)

  1. First: $5.40 ÷ 10 = $0.54 per 100 g
  2. Second: $11.80 ÷ 20 = $0.59 per 100 g
  3. The cheaper unit price is better value.
2.Which is better value: pencils at $1.02 for a pack of 6, or at $8.40 for a pack of 24?

Answer: $1.02 for a pack of 6 ($0.17 per pencil)

  1. First: $1.02 ÷ 6 = $0.17 per pencil
  2. Second: $8.40 ÷ 24 = $0.35 per pencil
  3. The cheaper unit price is better value.
3.Which is better value: juice at $4.60 for 1 L, or at $7.00 for 2 L?

Answer: $7.00 for 2 L ($0.35 per 100 mL)

  1. First: $4.60 ÷ 10 = $0.46 per 100 mL
  2. Second: $7.00 ÷ 20 = $0.35 per 100 mL
  3. The cheaper unit price is better value.
4.Which is better value: juice at $0.90 for 250 mL, or at $3.00 for 1 L?

Answer: $3.00 for 1 L ($0.30 per 100 mL)

  1. First: $0.90 ÷ 2.5 = $0.36 per 100 mL
  2. Second: $3.00 ÷ 10 = $0.30 per 100 mL
  3. The cheaper unit price is better value.
5.Which is better value: rice at $6.30 for 1 kg, or at $2.30 for 500 g?

Answer: $2.30 for 500 g ($0.46 per 100 g)

  1. First: $6.30 ÷ 10 = $0.63 per 100 g
  2. Second: $2.30 ÷ 5 = $0.46 per 100 g
  3. The cheaper unit price is better value.
6.Which is better value: pencils at $12.48 for a pack of 24, or at $8.28 for a pack of 12?

Answer: $12.48 for a pack of 24 ($0.52 per pencil)

  1. First: $12.48 ÷ 24 = $0.52 per pencil
  2. Second: $8.28 ÷ 12 = $0.69 per pencil
  3. The cheaper unit price is better value.
7.Which is better value: oats at $8.10 for 1 kg, or at $14.80 for 2 kg?

Answer: $14.80 for 2 kg ($0.74 per 100 g)

  1. First: $8.10 ÷ 10 = $0.81 per 100 g
  2. Second: $14.80 ÷ 20 = $0.74 per 100 g
  3. The cheaper unit price is better value.
8.Which is better value: oats at $3.60 for 1 kg, or at $2.70 for 500 g?

Answer: $3.60 for 1 kg ($0.36 per 100 g)

  1. First: $3.60 ÷ 10 = $0.36 per 100 g
  2. Second: $2.70 ÷ 5 = $0.54 per 100 g
  3. The cheaper unit price is better value.
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