Learn the Basics of Ratios and Proportions for WBP Constable Exam
Master the essentials of Ratios and Proportions for WBP Constable Exam with a focused and comprehensive guide.
Ratio FAQs
What are ratios and proportions?
Ratios are a way of comparing two or more quantities, while proportions are mathematical expressions that equate two ratios. They play a crucial role in solving problems involving relative sizes and quantities.
What is the formula for ratios and proportions?
The formula for ratios is expressing the comparison between two or more quantities, often represented as a : b. For proportions, it involves setting two ratios equal to each other, such as a/b = c/d. The cross-multiplication method is often used to solve proportions.
What is called proportion?
A proportion is an equation stating that two ratios are equal. In other words, it expresses the equality of two fractions or ratios, typically in the form a/b = c/d. The cross-multiplication method is commonly used to solve proportion problems.
What is C and D rule?
In proportions, the "C and D" rule refers to the cross-multiplication step used to solve the proportion equation. If you have a proportion of the form a/b = c/d, the "C and D" rule involves multiplying the numerator of the first fraction (a) by the denominator of the second fraction (d) and setting it equal to the product of the denominator of the first fraction (b) and the numerator of the second fraction (c). Mathematically, it can be expressed as ad = bc. This rule helps in solving for unknown values in proportion problems.
What is the golden rule of proportion?
The golden rule of proportion, also known as the cross-multiplication rule, states that in a proportion, the product of the extremes (the first and last terms) is equal to the product of the means (the middle terms). Mathematically, if you have a proportion a/b = c/d, the golden rule can be expressed as ad = bc. This rule is a fundamental concept used to solve proportion equations and find unknown values.
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