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:
If the ratio of Doctors in Borough IV, Ward 128 in Kolkata who have their mother-tongue as Tamil are the same as the Professors whose mother-tongue is Gurumukhi, how many Professors have Gurumukhi as their mother-tongue ?
24
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16% of Doctors in Borough IV, Ward 128 in Kolkata have their mother-tongue as Tamil
As the ratios are given to be the same,
16% of Professors too in Borough IV, Ward 128 in Kolkata have their mother-tongue as Gurumukhi
From the last question,
The number of Doctors in Borough IV, Ward 128 in Kolkata = 180
Thus 18% of the adult population = 180
Professors were 15% of the adult population
So 15% of the adult population = (180/18)*15 = 150
Thus, the number of Professors in Borough IV, Ward 128 in Kolkata = 150
Hence, the number of Professors who have Gurumukhi as their mother-tongue
= 16% of 150
= (16*150)/100
= 24