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

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

1.Which is better value: pencils at $17.04 for a pack of 24, or at $3.60 for a pack of 6?

Answer: $3.60 for a pack of 6 ($0.60 per pencil)

  1. First: $17.04 ÷ 24 = $0.71 per pencil
  2. Second: $3.60 ÷ 6 = $0.60 per pencil
  3. The cheaper unit price is better value.
2.Which is better value: oats at $4.90 for 1 kg, or at $13.60 for 2 kg?

Answer: $4.90 for 1 kg ($0.49 per 100 g)

  1. First: $4.90 ÷ 10 = $0.49 per 100 g
  2. Second: $13.60 ÷ 20 = $0.68 per 100 g
  3. The cheaper unit price is better value.
3.Which is better value: pasta at $3.50 for 1 kg, or at $1.45 for 500 g?

Answer: $1.45 for 500 g ($0.29 per 100 g)

  1. First: $3.50 ÷ 10 = $0.35 per 100 g
  2. Second: $1.45 ÷ 5 = $0.29 per 100 g
  3. The cheaper unit price is better value.
4.Which is better value: rice at $2.45 for 500 g, or at $5.40 for 1 kg?

Answer: $2.45 for 500 g ($0.49 per 100 g)

  1. First: $2.45 ÷ 5 = $0.49 per 100 g
  2. Second: $5.40 ÷ 10 = $0.54 per 100 g
  3. The cheaper unit price is better value.
5.Which is better value: juice at $4.90 for 1 L, or at $12.80 for 2 L?

Answer: $4.90 for 1 L ($0.49 per 100 mL)

  1. First: $4.90 ÷ 10 = $0.49 per 100 mL
  2. Second: $12.80 ÷ 20 = $0.64 per 100 mL
  3. The cheaper unit price is better value.
6.Which is better value: oats at $3.10 for 500 g, or at $5.20 for 1 kg?

Answer: $5.20 for 1 kg ($0.52 per 100 g)

  1. First: $3.10 ÷ 5 = $0.62 per 100 g
  2. Second: $5.20 ÷ 10 = $0.52 per 100 g
  3. The cheaper unit price is better value.
7.Which is better value: pencils at $10.68 for a pack of 12, or at $4.98 for a pack of 6?

Answer: $4.98 for a pack of 6 ($0.83 per pencil)

  1. First: $10.68 ÷ 12 = $0.89 per pencil
  2. Second: $4.98 ÷ 6 = $0.83 per pencil
  3. The cheaper unit price is better value.
8.Which is better value: pasta at $8.40 for 1 kg, or at $5.10 for 500 g?

Answer: $8.40 for 1 kg ($0.84 per 100 g)

  1. First: $8.40 ÷ 10 = $0.84 per 100 g
  2. Second: $5.10 ÷ 5 = $1.02 per 100 g
  3. The cheaper unit price is better value.
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