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1. A conference room is ¾ full. After 24 participants left the conference room is 3/8 full. Find the seating capacity?

2. 83 1/3 % of a number exceeds 66 2/3 % of the same number by ___ ?

3. Paula has 28 feet of ribbon. She uses 6 1/3 feet for each of the 4 dresses that she sew and decides to make 8 ornaments using equal length of ribbon for each. How many inches of ribbon is used for each ornament. (12 inches – 1 ft)

4. An aluminum bronze consist of copper and aluminum, usually in the ratio of 10:1 by weight. If an object made of this alloy weighs 88kg, how many kilograms of copper does it contain?

5. The sum of 16 2/3 % of a number and 33 1/3 % of the same number is 84. What is the number?

6. Glenly and Luz, working together, can finish binding 1000 books in 4 ½ days. Luz, working alone, can bind the 1000 book in 10 days. How long will it takes Glenly to do the same job working alone?

7. A certain mixture of flour and sugar consists if 12.5 kg of flour and 2.5 kg sugar. What percent of the mixture, by mass, is sugar?
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