MATH TRICK: Compound Proportion.(Arrow method) Inverse Variation; Compound Proportions; ARROW METHOD

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This video solves following 4 mathematics questions:

QUESTION 1: In a factory, if 35 workers can make 49 products in 3 days. Then, 20 workers, working for 6 days, will make how many products?

QUESTION 2: 64 men working 12 hours a day, dig a pond 50 m long, 2 m wide and 2 m deep in 5 days. In how many days, working 8 hours a day, will 80 men dig a pond 75 m long, 4 m wide and 3 m deep?

QUESTION 3: If 1 man or 2 women or 3 children can harvest a field in 55 days. Then, 1 man and 1 woman and 1 child together will harvest the same field in how many days?

QUESTION 4: 2 men and 7 boys can clean an office in 14 days. 3 men and 8 boys can do the same in 11 days. In how many days, will 8 men and 6 boys will clean the office which is 3 times bigger?

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Thank you sir. You jost helped me solve a problem for one of my pupils

ntanileonardnsodzeka
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This is really great explanation. Can't be found anywhere else on the Internet. And no teacher teaches it for GMAT, SAT, CAT, MBA preparation. It is useful for any competition exam

trueguru
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Thanks you so mutch every point are very clear explain

jawwadahmed
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This method is still alive.
Last time I solved in 1991.
Thanks boy
I was searching and you made it.

amitshukla
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4:19 Why still it has downward ⬇️ Arrow ? Bcz there's *more* which denotes *increasing* ? So please tell me why it is downward ?


In my opinion it should be upward ⬆️

_Ahsan.x._
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Thank You sir you are the best mathematics sir I have ever seen.

anmrzo
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Very useful video....those of who are confused where to identify and place arrow head on less and more...just place the arrow head on the less where workforce is given and arrow head on more in the rest of case.

anjuthagela
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Sir earlier I was very confused because of the matter of applying arrow's head on which side now after watching your video I don't have any confusion

abhilashchaturvedi
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Thanku so much, ,I randomly found this video when i was not understanding anything in the book ..and it helped me cleared this problem within 5 mins

prajakta
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Best explanation for this topic....
No other video explained as good as this...
I understood everything thanks to this video!

anithasaravanan
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Thanks only to you sir for making me understand before this I was not able to understand the questions only thank you sir again.

shauryaflamerider
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Thank you so much, it really helped me for preparing for my aptitude test.

VaniaHashmiAsharHashmi
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I hav never seen such a concept in my life... Hats off sir.

TradingTutor
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Very informative video you shun out my all confusions
Thank you so much

alizasultan
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I didn't think it would be that easy.... Thanks sir

learnwithfaixoo
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thank u very much it helped me in clearing my confusion.

nancyjaiswal
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Tons of thankyou sir...really really helpful

alifyahathiary
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it really works..I was so confused how to compare on what basis...the arrows..but now my confusion is clear🤭thank you so much

bornalibaruah
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You solve my all problems about this situation within no time

HaiderAli-yrcc
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Thank you sir for telling a great method to us. 🙏🙏.

anandkumarmishra