Explain how to scale a recipe based on ratios. The ratio of boys to girls in a class is 2 3. If there are 10 boys, how many girls are there?
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tỷ số và tỷ lệ 2in1
- Describe the formula for direct proportionality. What is an inverse proportion?
- Describe how to use a common multiple to solve ratio problems. A recipe calls for flour and sugar in the ratio 4 1. If you use 2 cups of sugar, how much flour do you need?
- Explain how to handle multi-component mixture problems.
- Find the greatest common divisor and divide both parts.
- Explain the steps to solve this type of ratio problem. Two numbers are in the ratio 5 7. If their sum is 36, find the numbers.
- How do you solve problems involving joint proportionality? Explain the concept of partial variation, where a quantity depends on another partly directly and partly as a constant.
- Give examples. What are the limitations of using ratios to represent real-world situations?
- Divide the total volume according to the given ratio.
- Explain each type with examples and their mathematical representation.
- Give examples. How can proportions be used to solve problems involving currency exchange rates with multiple currencies?
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