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  • Directions for question: The result of a survey conducted by the Municipal Corporation of Kolkata about the professions pursued by the resident

Directions for question:

The result of a survey conducted by the Municipal Corporation of Kolkata about the professions pursued by the resident adult population in Borough XIV, Ward 128, of Kolkata yielded the following result expressed as a pie-chart :

 

On further detailed survey on the mother-tongue of the residents, it was revealed that out of the doctors, the count of mother-tongue when expressed in a pie-chart was as follows :

It was found that only 9 Doctors had Assamese as their mother tongue.

Question:

How many residents in Borough IV, Ward 128 in Kolkata were Engineers by profession ?

 

 

 

 

Option: 1

200


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

From the second pie-chart,

The percentage of Doctors who had Assamese as their mother-tongue

=100 – (42+20+16+13+4) 

= 100 – 95

= 5%

Thus 5% of Doctors = 9

Hence total number of Doctors = (9/5)*100 = 180

From the first pie-chart,

The percentage of the adult population who were Engineers by profession

= 100 – (10+10+13+14+15+18) 

= 100 – 80

= 20%

18% of the adult population were Doctors by Profession

Thus 18% of the adult population = 180

Hence, the total number of residents in Borough IV, Ward 128 in Kolkata were Engineers by profession = (180/18)*20 = 200

 

Posted by

Rishabh

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