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Showing posts with label CAT. Show all posts
Showing posts with label CAT. Show all posts

Thursday 17 October 2013

Ratio And Propotion In Aptitude For Competitive Exams


Ratio And Propotion for bank exams

Ratio And Propotion Topic Is Very Important For Bank Exams, CAT, SSC , GATE, Campus And Other Competition Government Exams.

Ratio

1.The Ratio Of a and b Is Called Fraction a/b And We Can Write It As a:b.
2.In (a:b) a Is Called Antecedent And b Is Called Consequent.
3.The Multiplication, addition And Division Does not Affect The Ratio.
Example: a/b = a*3/b*3 = (a/3)/(b/3) = a+3/b+3
4.Ratio Is unitless Quantity.
5.We Can Divide The Ration In Following Types:
A.Duplicate Ratio: a^2:b^2 Is The Duplicate Ratio Of a:b.
B.Sub-Duplicate Ratio: (a^1/2):(b^1/2) Is Sub Duplicate Ratio Of a:b.
C.Sub-Triplicate Ratio: (a^1/3):(b^1/3) Is Subtriplicate Ratio Of a:b.
D.Compound Ratio: ab:cd Is The Compound ratio Of (a/b) And (c:d).
E.Inverse Ratio: 1/a:1/b Is The Inverse Ratio Of a:b.
F.Componendo And Dividendo: If We take a/b And c/d Then According To Componendo and Dividendo Rule:
a/b = c/d = a+b/a-b = c+d/c-d

Propotion

1.The Equality Of Two Ratio Is called Propotion.
Example: If We take a/b = c:d, Then We can Also Write Is a:b::c:d
a and d Called Extremes And b and c Called means Terms
There Is Relation Between Mean Terms And Extremes, That is:
Product Of Extreme = Product Of Means terms
a*d = b*c
2.Third Propotion: If We Take a/b=b/c Then b Is Called Third Propotion. and b^2 = a*c
And These a, b And c Are In Continued Propotion.
3.Fourth Propotion: If We Take a, b, c, d Then a:b = c:d Then There Is Relation Like ad=bc And d is called fourth propotion of a,b and c.

Some useful Terms And Relations:

If We take a:b/c:d Then Following Relation Would Hold
A.Intervendo = b:a=d:c
B.Alternendo = a:c=b:d
C.Componendo = (a+b):b = (c+d):d
D.Dividendo = (a-b):b = (c-d):d



Quantities aptitude questions given here are extremely useful for all kind of competitive exams like Common Aptitude Test (CAT),MAT, GMAT, IBPS 

Exam, CSAT, CLAT , Bank Competitive Exams, ICET, UPSC Competitive Exams, CLAT, SSC Competitive Exams, SNAP Test, KPSC, XAT, GRE, Defense 

Competitive Exams, L.I.C/ G. I.C Competitive Exams , Railway Competitive Exam, TNPSC, University Grants Commission (UGC), Career Aptitude Test 

(IT Companies) and etc, Government Exams etc ,Quantitative Aptitude For Competitive Examinations by R. S. Aggarwal , Quantitative Aptitude Book 

Description. Quantitative Aptitude for Competitive Examination (Fully Solved) Bank P.O, S.B.I. P.O; I.B.P.S; R.B.i. Exam
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