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 B is 400. Average age of female who attend seminar is 36 years and average age of female who not attend seminar is 24 years. Find the approximate average age of all the female in the city B?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCalculation:
Let number of people lived in city B is 400.
Number of people not attending seminar from B is 400 × 40 /100 =160
Number of people attending seminar from B is 400 – 160 = 240
Number of female attending seminar from B is 240 × 60 /100 = 144
Number of females who not attending seminar from B is 160 × 3/8 = 60
Required average age = [ 144 × 36 + 60 × 24] / [144 + 60]
= 32.47 = 32