Averages, Mixtures & Alligations (in <30 secs) Video 1 Course Overview Venkatesan S IIMB Alumni

Course Overview Averages Allegations Rule Mixtures Various problems using Alligation Rule (Percentages/ Profit & Loss/Simple Interest) CAT Problems

Introducing Averages - 1 I had scored 96 in Maths and 80 in Science. 88??

Introducing Averages - 1 If I had scored 84 in Biology? My average will drop to 86. If I score 90, it would increase to 89. Right?

Introducing Averages - 2 Find the average of below numbers 25 30 20 15 10 20 Arrange in Ascending order. 10,15,20,25,30

Introducing Averages - 2 Lets try one more. 34 42, 32, 48, 50, 40? Its easy. 41. right? But, is there a simple way to find this? 34, 36, 5050-34 16/2 8 34+8 42. Now I can easily find average of 42&36 as 39. Right?

Use Case 3127 3325 3257 3489 3577 198 +0 68 +164 252 150/5 +30 3325+50

Extending the Concept What if we add 2 in every number?- Average also increase by 2. Same case with subtaction, multiplication and Division. Give it a try

6 lessons,

1h 15m

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Venkatesan S

IIM Bangalore Alumni | Cleared CAT 2015 | Cleared IIM B, C, L, K & I

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Shivani Ray

a year ago

10/10 my score thanks sir

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MA

Mushahid Ansari

25 days ago

bhai phale bool na sheek lee

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Sanobar Imam

8 months ago

sir, you just earned a follower! Great course!!!!!!!!!!

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Rashmi Kumari

a year ago

great change for me thanks for the video

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Venkatesan S

a year ago

Thanks for your kind words Rashmi! Keep learning :)

Keshu Chhabra

a year ago

sir if we add 2 in every number their average also increses by 2 but what is the sum of the other 2 number?

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