Year 10 Best Buys and Unit Prices Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 10 ratio & rates worksheet.
Success TutoringWorksheetsAnswer sheetYear 10 · Mathematics · Ratio & RatesYear 10 Best Buys and Unit Prices Worksheet — Level 2 — 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 $3.30 for 500 g, or at $8.40 for 1 kg?
Answer: $3.30 for 500 g ($0.66 per 100 g)
- First: $3.30 ÷ 5 = $0.66 per 100 g
- Second: $8.40 ÷ 10 = $0.84 per 100 g
- The cheaper unit price is better value.
2.Which is better value: rice at $4.90 for 1 kg, or at $2.10 for 500 g?
Answer: $2.10 for 500 g ($0.42 per 100 g)
- First: $4.90 ÷ 10 = $0.49 per 100 g
- Second: $2.10 ÷ 5 = $0.42 per 100 g
- The cheaper unit price is better value.
3.Which is better value: rice at $7.00 for 2 kg, or at $1.50 for 500 g?
Answer: $1.50 for 500 g ($0.30 per 100 g)
- First: $7.00 ÷ 20 = $0.35 per 100 g
- Second: $1.50 ÷ 5 = $0.30 per 100 g
- The cheaper unit price is better value.
4.Which is better value: pencils at $10.80 for a pack of 24, or at $3.96 for a pack of 12?
Answer: $3.96 for a pack of 12 ($0.33 per pencil)
- First: $10.80 ÷ 24 = $0.45 per pencil
- Second: $3.96 ÷ 12 = $0.33 per pencil
- The cheaper unit price is better value.
5.Which is better value: rice at $1.70 for 1 kg, or at $5.40 for 2 kg?
Answer: $1.70 for 1 kg ($0.17 per 100 g)
- First: $1.70 ÷ 10 = $0.17 per 100 g
- Second: $5.40 ÷ 20 = $0.27 per 100 g
- The cheaper unit price is better value.
6.Which is better value: rice at $4.25 for 500 g, or at $14.20 for 2 kg?
Answer: $14.20 for 2 kg ($0.71 per 100 g)
- First: $4.25 ÷ 5 = $0.85 per 100 g
- Second: $14.20 ÷ 20 = $0.71 per 100 g
- The cheaper unit price is better value.
7.Which is better value: rice at $4.00 for 2 kg, or at $1.50 for 500 g?
Answer: $4.00 for 2 kg ($0.20 per 100 g)
- First: $4.00 ÷ 20 = $0.20 per 100 g
- Second: $1.50 ÷ 5 = $0.30 per 100 g
- The cheaper unit price is better value.
8.Which is better value: pasta at $1.80 for 250 g, or at $6.60 for 1 kg?
Answer: $6.60 for 1 kg ($0.66 per 100 g)
- First: $1.80 ÷ 2.5 = $0.72 per 100 g
- Second: $6.60 ÷ 10 = $0.66 per 100 g
- The cheaper unit price is better value.
Marking tips
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