A factory produces 500 items in 8 hours. How many items can it produce in 12 hours at the same rate?
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tỷ số và tỉ lệ 2 in 1
- How do you check if a proportion is true? What is cross-multiplication in proportions?
- Find two ratios equivalent to 6 8.
- If a recipe uses flour and water in the ratio 4 2, what percentage of the mixture is water?
- A train travels at a speed of 60 km/h. What is its speed in meters per second?
- If a train travels at a speed of 80 km/h and takes 3 hours to reach its destination, how long will it take if it travels at 60 km/h?
- The prices of two articles are in the ratio 8 5. If the price of the first article increases by 10% and the price of the second article increases by 8%, what is the new ratio of their prices? If x/y = 2/5 and y/z = 7/3, find x/z.
- Explore the concept of compound ratios. What is a direct variation, and how is it related to proportions?
- Consider potential extensions of ratio and proportion concepts to more advanced mathematical topics. How do you compare ratios using common denominators or cross-multiplication?
- A mixture of three types of tea, A, B, and C, are in the ratio 3 5 2. If 10 kg of type C tea are used, what is the total weight of the mixture? If a b = 5 2 and b c = 3 4 and c d = 1 2, find a b c d.
- A company's assets and liabilities are in the ratio 7 2. If the liabilities are $50,000, what are the assets? Solve for r (5r+2)/4 = (3r-1)/2.
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