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9th Grade Best Buys and Unit Prices Worksheet — Level 3 — Practice Set 2 — Answers

Answer sheet with worked solutions for the 9th Grade ratios & rates worksheet.

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Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Ratio & Rates

9th Grade Best Buys and Unit Prices Worksheet — Level 3 — Practice Set 2 — Answers

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

1.Which is better value: oats at $7.80 for 1 kg, or at $3.60 for 500 g?

Answer: $3.60 for 500 g ($0.72 per 100 g)

  1. First: $7.80 ÷ 10 = $0.78 per 100 g
  2. Second: $3.60 ÷ 5 = $0.72 per 100 g
  3. The cheaper unit price is better value.
2.Which is better value: rice at $15.40 for 2 kg, or at $3.60 for 500 g?

Answer: $3.60 for 500 g ($0.72 per 100 g)

  1. First: $15.40 ÷ 20 = $0.77 per 100 g
  2. Second: $3.60 ÷ 5 = $0.72 per 100 g
  3. The cheaper unit price is better value.
3.Which is better value: pencils at $10.32 for a pack of 12, or at $6.30 for a pack of 6?

Answer: $10.32 for a pack of 12 ($0.86 per pencil)

  1. First: $10.32 ÷ 12 = $0.86 per pencil
  2. Second: $6.30 ÷ 6 = $1.05 per pencil
  3. The cheaper unit price is better value.
4.Which is better value: rice at $6.00 for 2 kg, or at $1.30 for 1 kg?

Answer: $1.30 for 1 kg ($0.13 per 100 g)

  1. First: $6.00 ÷ 20 = $0.30 per 100 g
  2. Second: $1.30 ÷ 10 = $0.13 per 100 g
  3. The cheaper unit price is better value.
5.Which is better value: oats at $8.90 for 1 kg, or at $4.85 for 500 g?

Answer: $8.90 for 1 kg ($0.89 per 100 g)

  1. First: $8.90 ÷ 10 = $0.89 per 100 g
  2. Second: $4.85 ÷ 5 = $0.97 per 100 g
  3. The cheaper unit price is better value.
6.Which is better value: oats at $1.75 for 500 g, or at $4.30 for 1 kg?

Answer: $1.75 for 500 g ($0.35 per 100 g)

  1. First: $1.75 ÷ 5 = $0.35 per 100 g
  2. Second: $4.30 ÷ 10 = $0.43 per 100 g
  3. The cheaper unit price is better value.
7.Which is better value: oats at $8.00 for 2 kg, or at $2.35 for 500 g?

Answer: $8.00 for 2 kg ($0.40 per 100 g)

  1. First: $8.00 ÷ 20 = $0.40 per 100 g
  2. Second: $2.35 ÷ 5 = $0.47 per 100 g
  3. The cheaper unit price is better value.
8.Which is better value: pencils at $2.40 for a pack of 6, or at $5.52 for a pack of 24?

Answer: $5.52 for a pack of 24 ($0.23 per pencil)

  1. First: $2.40 ÷ 6 = $0.40 per pencil
  2. Second: $5.52 ÷ 24 = $0.23 per pencil
  3. The cheaper unit price is better value.
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