RS Aggarwal Solutions Class 7 Chapter-8 Ratio and Proportion (Ex 8B) Exercise 8.2 - Free PDF
FAQs on RS Aggarwal Solutions Class 7 Chapter-8 Ratio and Proportion (Ex 8B) Exercise 8.2
1. What is meant by Ratio?
In some cases, comparing two amounts using the division approach is quite efficient. A Ratio can be defined as the comparison or simplified form of two quantities of the same kind. This relationship tells us how many times one quantity equals another. To state it another way, a Ratio is a figure that can be used to express one quantity as a percentage of another.
Only when the two numbers in a Ratio have the same unit can they be compared. Ratios are used to compare two objects. The symbol ':' is used to denote Ratio.
A Fraction, such as 2/5, can be used to express a Ratio. In our daily lives, we come across many comparisons, or Ratios.
2. What is meant by Proportion?
Proportion is a Mathematical expression that states that two Ratios are equivalent. In other words, the Proportionate means that the two fractions or Ratios are equal. In a Proportion, two sets of provided numbers are implied to be directly Proportional to one another if they increase or decrease in the same Ratio.
For Example, the time it takes a train to travel 100 kilometres per hour is the same as the time it takes to travel 500 kilometres in 5 hours. For Example, 100 km/hr = 500 km/5 hours.
Proportions and Ratios are considered to be two sides of the same coin. If the values of two Ratios are equal, they are in Proportion. To put it another way, it compares two Ratios. The sign '::' or '=' is used to represent Proportions.
3. What are the applications of Ratio and Proportion in real life?
The applications of Ratio and Proportion in real life are:
Fractions are used to describe a lot of things, including Ratio and Proportion. A Ratio is when a Fraction is written in the form a:b, whereas a Proportion states that two Ratios are equal. In this case, a and b can be any two integers. The two key notions of Ratio and Proportion provide the foundation for understanding numerous concepts in Mathematics and Science.
The concept of Ratio and Proportion is applied in our daily lives, such as in business when dealing with money or when cooking any cuisine, for Example. The concepts of Ratio and Proportion are sometimes misunderstood by students. Students will have a better understanding of these two concepts by reading this article, which includes additional solved Examples and questions.
4. What is the meaning of direct Proportion and Inverse Proportion?
The meaning of direct Proportion and Inverse Proportion is given in the following answer:
Proportionate Proportion
The Direct Proportion defines the relationship between two quantities in which when one number rises, the other quantity increases as well. In the same way, if one amount diminishes, the other quantity reduces as well. As a result, the Direction Proportion is expressed as ab if "a" and "b" are two quantities.
Inverse Proportion
The Inverse Proportion indicates a relationship between two quantities in which an increase in one item causes the other to decrease. Similarly, if one quantity decreases, the other quantity increases. As a result, a(1/b) represents the Inverse Proportion of two quantities, say "a" and "b."
