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9th Grade Best Buys and Unit Prices Worksheet — Level 3 — Practice Set 4 — 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 4 — Answers

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

1.Which is better value: pasta at $1.55 for 500 g, or at $4.10 for 1 kg?

Answer: $1.55 for 500 g ($0.31 per 100 g)

  1. First: $1.55 ÷ 5 = $0.31 per 100 g
  2. Second: $4.10 ÷ 10 = $0.41 per 100 g
  3. The cheaper unit price is better value.
2.Which is better value: oats at $16.80 for 2 kg, or at $8.80 for 1 kg?

Answer: $16.80 for 2 kg ($0.84 per 100 g)

  1. First: $16.80 ÷ 20 = $0.84 per 100 g
  2. Second: $8.80 ÷ 10 = $0.88 per 100 g
  3. The cheaper unit price is better value.
3.Which is better value: pencils at $5.64 for a pack of 12, or at $14.16 for a pack of 24?

Answer: $5.64 for a pack of 12 ($0.47 per pencil)

  1. First: $5.64 ÷ 12 = $0.47 per pencil
  2. Second: $14.16 ÷ 24 = $0.59 per pencil
  3. The cheaper unit price is better value.
4.Which is better value: pasta at $1.75 for 500 g, or at $0.95 for 250 g?

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

  1. First: $1.75 ÷ 5 = $0.35 per 100 g
  2. Second: $0.95 ÷ 2.5 = $0.38 per 100 g
  3. The cheaper unit price is better value.
5.Which is better value: oats at $6.20 for 1 kg, or at $2.15 for 500 g?

Answer: $2.15 for 500 g ($0.43 per 100 g)

  1. First: $6.20 ÷ 10 = $0.62 per 100 g
  2. Second: $2.15 ÷ 5 = $0.43 per 100 g
  3. The cheaper unit price is better value.
6.Which is better value: oats at $3.20 for 500 g, or at $5.20 for 1 kg?

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

  1. First: $3.20 ÷ 5 = $0.64 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: pasta at $3.75 for 500 g, or at $6.60 for 1 kg?

Answer: $6.60 for 1 kg ($0.66 per 100 g)

  1. First: $3.75 ÷ 5 = $0.75 per 100 g
  2. Second: $6.60 ÷ 10 = $0.66 per 100 g
  3. The cheaper unit price is better value.
8.Which is better value: pencils at $13.44 for a pack of 24, or at $6.48 for a pack of 12?

Answer: $6.48 for a pack of 12 ($0.54 per pencil)

  1. First: $13.44 ÷ 24 = $0.56 per pencil
  2. Second: $6.48 ÷ 12 = $0.54 per pencil
  3. The cheaper unit price is better value.
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