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RS Aggarwal Solutions Class 7 Chapter-9 Unitary Method (Ex 9B) Exercise 9.2

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Last updated date: 17th Apr 2024
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RS Aggarwal Solutions Class 7 Chapter-9 Unitary Method (Ex 9B) Exercise 9.2 - Free PDF

Free PDF download of RS Aggarwal Solutions Class 7 Chapter-9 Unitary Method (Ex 9B) Exercise 9.2 solved by Expert Mathematics Teachers on Vedantu. All Exercise 9.2 Questions with Solutions for Class 7 RS Aggarwal to help you to revise complete Syllabus and Score More marks. Register for online coaching for IIT JEE (Mains & Advanced) and other Engineering entrance exams.


You can also register Online for NCERT Class 7 Science tuition on Vedantu to score more marks in your examination. Every NCERT Solution is provided to make the study simple and interesting on Vedantu. Vedantu is No.1 Online Tutoring Company in India Provides you Free PDF download of NCERT Maths Class 7 solved by Expert Teachers as per NCERT (CBSE) Book guidelines. All Chapter wise Questions with Solutions to help you to revise complete Syllabus and Score More marks in your examinations.

What Exactly is the Unitary Method?

The unitary technique entails first determining the value of a single unit and then determining the value of a specified number of units. What are the possibilities for units and values?


Let's say you're going to the market to buy 5 mangoes. The trader informs you that 10 mangoes are available for Rs 100. The apples are the units in this scenario, and the cost of the fruit is the value. 


It's critical to understand the units and values while using the unitary technique to solve a problem.


Always write the items that need to be computed on the right side and the things that you already know on the left side. The number of mangoes is known in the problem above, but the worth of the mangoes is unknown. 


Unitary Method Applications : 

The unitary approach is used in a wide range of situations, from speed, distance, and time concerns to problems involving material cost calculation.


1. This procedure is used to determine a product's pricing.

2. It's used to calculate how long it takes a vehicle or a person to travel a certain distance in an hour.

3. It is used to calculate profit and loss in the business world.

FAQs on RS Aggarwal Solutions Class 7 Chapter-9 Unitary Method (Ex 9B) Exercise 9.2

1. What is the unitary method as discussed by RS Aggarwal class 7 Maths chapter 9, and how does it work?

Yes, it works for businesses to calculate their long term or short term profit or losses. The unitary method is a method for determining the value of a single unit and then calculating the value of the requisite number of units based on that value. It makes it simple to solve a variety of problems. It is based on the concepts of proportion and ratio.

2. What are two types of unitary methods?

Direct Variation - When one quantity increases or decreases, it causes the next quantity to rise or decrease as well.

For example, as the number of things increases, the price rises. The quantity of work done by a group of guys is significantly greater than the amount done by a single man.


Inverse Variation - Inverse variation is the inverse of direct variation. The amount of two sets is inversely proportional, meaning that increasing one causes the other to decrease.

3. How can I prepare for my Class 7 Maths exams?

It is critical to create a study strategy. Mark all of the significant dates on a calendar.

  • Make a list of all the important dates from the exam schedule.

  • Set aside Sunday each week to create a weekly plan.

  • Also, make a note of any dates when you have other obligations (like extracurricular activity or family outing)

  • The planning process appears to take a long time, yet it only takes 15 minutes every week. It's a good use of your time because you'll be productive for the rest of the week. More importantly, stick to your study schedule at all times. It helps to develop discipline over time.

4. How to study for class 7 chapter 9 of RS Aggarwal?

Many students believe that they may start studying a few weeks before the examinations and get the grades they want. When the time comes to study, they despise it and can't seem to find any interest in it. Do not wait until the last minute to prepare. To improve at anything, you must recognise that the only thing you need to do is practise. Hard work is necessary in practicing. The more you practise, the better you'll get.

5. Why is the Unitary method used according to class 7 chapter 9?

The unitary method, in simple words, is used to calculate the value of a single unit from a specified multiple. Furthermore, once the value of a single unit has been determined, the value of the required units can be calculated by multiplying the single value unit. This approach is mostly used to calculate ratios and proportions. Always write the things to be computed on the right-hand side and the things known on the left-hand side to simplify things.