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Directions: Read the following information and answer the question the follows:
A business strategy competition was conducted in which 5 schools A, B, C, D and E participated in the final round. The event was finally won by school C. The following table gives the number of girls from A, B, D and E who participated in the event as a percentage of the total students from school C who participated in the event.

It is also known that the ratio of the number of girls to boys in the schools A, B, D and E who participated in the event was 1:3, 3:2, 4:3 and 5:3 in no particular order.
Q. If it is known that 80 students participated from school C, find the difference between the number of boys who participated from school B and school D?
  • a)
    4
  • b)
    6
  • c)
    8
  • d)
    Can not be determined
Correct answer is option 'A'. Can you explain this answer?
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Directions: Read the following information and answer the question the...
It is known that 80 students participated from school C. The number of girls from schools A, B, D and E will be as follows

It is also known that the ratio of the number of girls to boys in the schools A, B, D and E who participated was 1:3, 3:2, 4:3 and 5:3 in no particular order.
The ratio 5 : 3 must be of school D as there is no other number for the total girls which is a multiple of 5. If we take the ratio as 4 : 3 for D then for E we don't have any ratio because 16 is not a multiple of 5 and 3. Similarly, the ratio 3 : 2 must be of school B.
For school D, 5/8 of total = 20
Total students in D = 32
Number of boys in D = 12 (3/8 of 32)
For school B, 3/5 of total = 12
Total students = 20    
Number of boys in B = 8    
Required difference = 12 – 8 = 4.
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