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# PPT - Ratio, "Ratio, Proportions, indices and logarithms" CA Foundation Notes | EduRev

## Quantitative Aptitude for CA CPT

Created by: Wizius Careers

## CA Foundation : PPT - Ratio, "Ratio, Proportions, indices and logarithms" CA Foundation Notes | EduRev

``` Page 1

Ratio and Proportion,
Indices and Logarithm
Paper 4: Quantitative Aptitude Chapter 1
Part I: Ratio & Proportion

Ms. Ritu Gupta, MA (Maths.)
Page 2

Ratio and Proportion,
Indices and Logarithm
Paper 4: Quantitative Aptitude Chapter 1
Part I: Ratio & Proportion

Ms. Ritu Gupta, MA (Maths.)
Ratio
2
Page 3

Ratio and Proportion,
Indices and Logarithm
Paper 4: Quantitative Aptitude Chapter 1
Part I: Ratio & Proportion

Ms. Ritu Gupta, MA (Maths.)
Ratio
2
Learning Objectives
How to
compute
and
compare
two ratios
Effect of
increase or
decrease of
a quantity
on the ratio
The concept
and
application
of different
kinds of
ratio
3
Page 4

Ratio and Proportion,
Indices and Logarithm
Paper 4: Quantitative Aptitude Chapter 1
Part I: Ratio & Proportion

Ms. Ritu Gupta, MA (Maths.)
Ratio
2
Learning Objectives
How to
compute
and
compare
two ratios
Effect of
increase or
decrease of
a quantity
on the ratio
The concept
and
application
of different
kinds of
ratio
3
Ratio
A ratio is a comparison of the sizes of two or more quantities of
the same kind (in same units) by methods of division.
If a and b are two quantities of the same kind then the fraction
a/b is called the ratio of a to b.
It is written as a : b or a/b
The quantities a and b are called the terms of the ratio, a is
called the first term or antecedent and b is called the second
term or consequent.
4
Page 5

Ratio and Proportion,
Indices and Logarithm
Paper 4: Quantitative Aptitude Chapter 1
Part I: Ratio & Proportion

Ms. Ritu Gupta, MA (Maths.)
Ratio
2
Learning Objectives
How to
compute
and
compare
two ratios
Effect of
increase or
decrease of
a quantity
on the ratio
The concept
and
application
of different
kinds of
ratio
3
Ratio
A ratio is a comparison of the sizes of two or more quantities of
the same kind (in same units) by methods of division.
If a and b are two quantities of the same kind then the fraction
a/b is called the ratio of a to b.
It is written as a : b or a/b
The quantities a and b are called the terms of the ratio, a is
called the first term or antecedent and b is called the second
term or consequent.
4
Points to Remember
1
• Both terms of a ratio can be multiplied or divided by the same (non –
zero) number. Usually a ratio is expressed in the lowest form or the
simplest form. Example:-       10 : 15 = 10/15 = (5×2)/ (5×3) = 2/3 = 2:3
2
• Ratio exists only between quantities of the same kind. For Example:
There is no ratio between the height of a child and the salary of a
teacher.
3
• The order of the terms in a ratio is important. For example -  4:5 ? 5:4
4
• If a quantity increases or decreases in the ratio a : b, then new quantity =
b of the original quantity / a
5
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