Question
Download Solution PDFComprehension
The bar graph given below shows percentage of people (male +female) not attended the seminar out of the total people in the city and percentage of male attended the seminar out of the total people attended the seminar from four different (A, B, C and D) cities.
Note: Total people in a city = People (male + female) attending the seminar + people (male + females) not attending the seminar. People attending/not attending the seminar = males + females
The given table shows the ratio of male and female who did not attending the seminar.
|
City |
Ratio of male and female who did not attend the seminar |
|
A |
3:2 |
|
B |
5:3 |
|
C |
5:4 |
|
D |
6:5 |
Total number of people in city A is (280 + x). Number of females who did not attend the seminar is 72. Difference between number of male and female who attend the seminar is y. Find the value of 5y + 7x?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCalculation:
Let number of people lived in city A is 100a.
Number of people not attending seminar from A is 100a × 60 /100 = 60a
Number of people attending seminar from A is 100a – 60a = 40a
Number of males attending the seminar from A is 40a × 25 /100 =10a
Number of females attending seminar from A is 40a – 10a = 30a
Number of males who are not attending the seminar from A is 60a × 3 / 5 =36a
Number of females who are not attending the seminar from A is 60a – 36a = 24a
ATQ, 24a = 72, a = 3.
30a – 10a = 20a = 20 * 3 = 60 = y.
Also, 280 + x = 300, x = 20.
So, 5y + 7x = 5 × 60 + 7 × 20 = 300 + 140 = 440