If the number of female Physics professors in the age group 25-34 equals 25% of all the Physics professors in that age group, then what is the number of male Physics professors in the age group 25-34?
Options:
A) 9
B) 6
C) 3
D) 2
Show Answer
Answer:
Correct Answer: A
Solution:
- Total number of Physics professors is 40, from fig. A. From fig. B, the percentage of Physics professors in the age group 25-34 is 30%
Hence, total number of Physics professors in the 25-34 range $ =40\times \frac{30}{100}=12 $
Out of these 12, 25% i.e. $ ( \frac{25}{100} )\times 12 $ are female.
Hence, the number of male Physics professors in the age group 25-34
$ =12-\frac{12\times 25}{100} $
$ =12-3=9 $