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Population and Depreciation Problems (in Hindi)
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The concept of before value or after value is explained with examples that includes questions on population survey etc.

Harpreet Kaur
Youtube channel Preparation Point https://www.youtube.com/channel/UCC2_Jv4ThsDf5wUoxh_-LKw

U
Unacademy user
road construction or the radio?
Arpita Sharma
9 months ago
Sir , question is on relatable topic but not on HAM . PLS NOTE .
In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is  of the number of students of 8 years of age which is 48. What is the total number of students in the school? Can you explain this in easy way
Harpreet Kaur
9 months ago
What is "obj" ?
That last one question I did not get it
Harpreet Kaur
9 months ago
In starting population was 1,75000, after 10 years it become 2,62,500 so total increase from starting is 87,500, which is equal to 50% of 1,75,000 there avg change over 10 years = 50/10 = 5%
Joker smile
9 months ago
I solved it thank you 😘
Harpreet Kaur
9 months ago
Welcome :)
mam ye Jo first example hai isme first year ke liye toh 90/100 hoga PR second year ke liye 80/100 hoga.plz explain it I'm confused
Harpreet Kaur
2 years ago
Dekho population har saal 10% ke hisab se kam hogi ek saal ke liye hum directly 90/100 se multiply kr skte hai lekin do saal ke baad population firse 10% km ho jayegi jitni wo pichle saal thi toh ek saal ke badh toh population p * 90/100 p ko aap total population maan lo... toh dusre saal firse iska 10% km kro, matlab firse 90/100 se multiple kro after two years = p * 90/100 * 90/100 directly 80% krna galat hoga, kyuki 10% pichle saal se km ho rha hai, na ke kisi ek refrence year se... Jab bhi population ki baat ho toh successive increase ya decrease ka case hota hai.... Isme aap net effect formula bhi use kr skte hai (jo ke successive discounts ke liye hum use krte hain) For net effect formula- watch 5th lesson of Partnership course
OK mam thank you
OK mam thank you
OK mam thank you
OK mam thank you
OK mam thank you
OK mam thank you
OK mam thank you
Harpreet Kaur
2 years ago
:)
  1. LESSON 3 Population and depreciation related formula and questions



  2. o,"rThe Pop.lation atown decreases ot ote to%p.a e Descn I oo 2.


  3. The population town ysa, a o was basoo. Due to negation o b ciies, it has been decreasedl at nte c&cased neja desen opnla tion that town y 74


  4. & The Popultion a town increases at rate 5%pa m oo a 1385 tToY 15 3 AN S-


  5. 0% The valne machine depreciate @ 15% fa.It hoa s Puschased 3 beas ajo If t pesent value stnd Rs 749. nschased 979 3148 le e .tok x LAA =LR s-12.000


  6. 0'r The f .lation gf a town } s nceeased Jaow 1,75,0 to 8685 n a decade The avevnye pevcent increase f poputathon a6a500-175000 Average % Inc. = 50