Grade 6 mathematics
Equivalent Ratios and Unit Rates
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- Four notebooks cost $12. At the same unit price, how much do seven notebooks cost?
- The ratio of red markers to blue markers is 2:5. If there are 8 red markers, how many blue markers are there?
- Which ratio is equivalent to 6:9?
- A printer makes 24 pages in 3 minutes at a constant rate. How many pages does it make in 7 minutes?
Answer key
- $21. $12 ÷ 4 = $3 each; 7 × $3 = $21.
- 20 blue markers. Multiply both parts of 2:5 by 4 to get 8:20.
- 2:3. Divide both parts of 6:9 by 3.
- 56 pages. 24 ÷ 3 = 8 pages per minute; 8 × 7 = 56.