Post on 08-Apr-2016
description
SSC EXAM
Online Coaching
Online Coaching by SSCPORTAL
© SSCPORTAL.IN
http://sscportal.in
Staff Selection Commission
Combined Graduate Level[Tier-1]
Subject : Numerical Aptitude
Chapter : Alligation or Mixture
Numerical Aptitude
Alligation or Mixture
It is the rule that is used to determine the mean value of
the mixture when the prices of the individual items being
mixed together and the proportion in which they are being
mixed are given. Here, the value of the mixture is always
higher than the lowest value and lower than the higher
value of the items being mixed.
© 2014 SSCPORTAL .IN
http://sscportal.in
Join Online Coaching Click Here
Numerical Aptitude
Alligation or Mixture
According to the Rule of Alligation
Quantity of cheaper = Price of dearer - Mean price
Quantity of dearer Mean price - Price of cheaper
© 2014 SSCPORTAL .IN
http://sscportal.in
Join Online Coaching Click Here
Numerical Aptitude
Alligation or Mixture
It can be also expressed as,
therefore, (Cheaper quantity : Dearer quantity) = (y – m) :
(m – x)
© 2014 SSCPORTAL .IN
http://sscportal.in
Join Online Coaching Click Here
Mathematics
Alligation or Mixture
Where, mean price (m) is the cost price of a unit quantity
of the mixture.
Also, if a container contains x units of liquid from which y
units are taken out and replaced by water. After n
operations, the quantity of pure liquid is [x(1 - y/x)n] unit.
© 2014 SSCPORTAL .IN
http://sscportal.in
Join Online Coaching Click Here
Numerical Aptitude
Alligation or Mixture
Example 1: How many kilograms of rice costing Rs 18 per
kg must be mixed with 30 kg of rice costing Rs 14 per kg,
so that the resultant mixture cost Rs 15 per kg.
Solution. Applying the rule of alligation, we have
© 2014 SSCPORTAL .IN
http://sscportal.in
Join Online Coaching Click Here
Numerical Aptitude
Alligation or Mixture
Therefore, Quantity of cheaper rice = 3
Quantity of dearer rice 1
If cheaper rice is 3 kg, dearer rice is 1 kg.
If cheaper rice is 30 kg, dearer rice = (30 x 1) kg = 10 kg
3
© 2014 SSCPORTAL .IN
http://sscportal.in
Join Online Coaching Click Here
THANK YOU!
IAS Online Coaching Courses
http://www.upscportal.com/civilservices/courses
CGL Tier-1: Join Online Coaching Click Here http://sscportal.in/community/courses/ssc-cgl-tier-1
If You want to Buy Hard Copy Click Here :
http://sscportal.in/community/study-kit/cgl
http://sscportal.in
UPSCPORTAL other online Courses
www.upscportal.com
More IAS Online Coaching Courses
http://www.upscportal.com/civilservices/courses
Online Course For Civil Services Preliminary Examination
सामान्य अध्ययन पेपर-1 ऑनऱाइन कोच िंग
Online Coaching For CSAT Paper -1 (GS) 2014
Online Coaching For CSAT Paper -2 (CSAT) 2014
Online Course For Civil Services Mains Examination
General Studies Mains (New Pattern Paper 2,3,4,5)
Contemporary Issues for Civil Services Main Examination
Public Administration For Mains