Direct and Inverse Variation Class-8th RS Aggarwal ICSE Maths Goyal Brothers

Direct and Inverse Variation Class-8th RS Aggarwal ICSE Mathematics Goyal Brothers Prakashan Chapter-9. We provide step by step Solutions of Exercise / lesson-10 Direct and Inverse Variation for ICSE Class-8  RS  Aggarwal Mathematics.

Our Solutions contain all type Questions of Exe-10 A, Exe-10 B, (MCQ)  and Mental Maths with Notes to develop skill and confidence. Visit official Website CISCE for detail information about ICSE Board Class-8 Mathematics.

Direct and Inverse Variation Class-8th RS Aggarwal ICSE Mathematics Goyal Brothers Prakashan Chapter-9


-: Select Topic :-

EXE-10 A,

MCQ EXE-10 B,

MENTAL MATHS


Direct Proportion Definitions

The proportion is said to be a direct proportion between two values when one is a multiple of the other.

Directly Proportion Symbol

The symbol used to represent the direct proportion is “”.

Inverse Proportion

The value is said to inversely proportional when one value increases and the other decreases. The proportionality symbol is used in a different way.

Inverse Proportion Definition

Two quantities a and b are said to be in inverse proportion if an increase in the quantity a, there will be a decrease in the quantity b, and vice-versa

How to Set up an Equation?

  • First, write down the proportional symbol
  • Convert it as an equation using the constant of proportionality
  • Find the constant of proportionality from the given information
  • After finding the constant of proportionality, substitute in an equation.

Exercise – 10 A, Direct and Inverse Variation Class-8th RS Aggarwal ICSE Mathematics Goyal Brothers Prakashan

Question 1 :

If the cost of 40 toy is 1024. what is the cost of one dozen such toys?

Question 2:

If 18 notebook …………………… 425.50 ?

Question 3:

………………….

………………….

………………….

…………………..

Question 15:

7 worker working 6 hours a day can build a wall in 12 days. Hoe many days will 3 worker take to build a similar wall, working 8 hour a day.


Direct and Inverse Variation  Exercise – 10 B MCQ of Class-8th RS Aggarwal Mathematics Goyal Brothers Prakashan

choose the correct option in each of the following :

Question 1:

If 20 article cost 90. the cost of 9 article is.

…………………

Question 2:

With 1000 Rs. one can buy 4 pair …………………… and 3 shirts ?

Question 3:

…………………

…………………

………………..

Question 11:

if 4/5 th part of ………………… rest of it.


Mental Maths, Chapter-10 of ICSE Class-8 Mathematics Goyal Brothers Prakashan

fill in the blanks………….

Question 1:

(i) when x and y are in direct proportion then

(ii) If x men can do ………………. days.

(iii) If m article cost ……….

(iv) If 8 oranges cost ………….

(v) 6 pipe can fill…………..

Question 2:

Write true or false :

–: End of Direct and Inverse Variation Class-8th RS Aggarwal Solutions :–

 

Return to- RS Aggarwal Solutions for ICSE Class-8 Goyal Brothers Prakashan


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