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Practice questions 2
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This lesson will help you answer the questions based on Percentages

Abhishek Khurana
I am Abhishek Khurana. I completed my B.Com(H) from Panjab University in 2008 & my MBA from NMIMS in 2011.

U
Unacademy user
HOW DID YOU IDENTIFY Dat x'1/3 is not diffrentiable
  1. Abhishek Khurana 6 times 99 percentiler in CAT


  2. unacademy All structured |Lessons by al and live courses | top Educators Weekly quizzes & doubt-clearing olus ABHISHEK KHURANA abhishek.khurana4462


  3. Introduction Example 18, Dipin's score is 15% more than that of Rafi and Rafi's score is 10% less than that of Chandar. If the difference between the scores of Dipin and Chandar is 14, then what is the score of Rafi? Solution: Dipin's score 115/100 x Rafi's score Rafi's score =90/100 x chandar's score Let Chandar's score be I15/100 x 90/100 x-x=14 207/200 X-X-14 7x = 14 x 200 => X = 400 Rafi's score 90/100 x 400 360


  4. Introduction Example 19.40% population of a village are women and the rest are men. 60% of the women and 45% of the men are above 30 years old. If the total population of the village is 20000, then what can be the maximum number of people in the village who are 30 years old?


  5. Introduction Example 19.40% population of a village are women and the rest are men, 60% of the women and 45% of the men are above 30 years old. If the total population of the village is 20000, then what can be the maximum number of people in the village who are 30 years old? Solution: Total population = 20000 So, men and women in the village = 12000, 8000 Women above 30 years = 4800 Men above 30 years 5400 Number of person below or equal to 30 years 20000 (4800 +5400) 9800


  6. Introduction Example 20. Ravi's present age is 50% of Charu's present age. If a few years ago Ravi's age was 33.33% of the Charu's age, then find out the percentage change in Ravi's age over the time.


  7. Introduction Example 20. Ravi's present age is 50% of Charu's present age. If a few years ago Ravi's age was 33.33% of the Charu's age, then find out the percentage change in Ravi's age over the time. Solution: Suppose Ravi's present age is x Charu's present age 2x Suppose y years ago (2x-y) x 33.33%-(x-y) (2x -y)*1/3 x y 2x-y-3x-3y y years ago, Ravi's age was (x X/2) x/2 Hence, percentage change in Ravi's present age-- (x2/x/2) *100-100%


  8. THANK YOU