Read the given data carefully and answer the questions. There are 900 students…
2022
Read the given data carefully and answer the questions. There are 900 students in a college and they are either from one or more categories i.e. A, B and C games. The ratio of total students in only A, only B and only C is 2 : 3 : 5 respectively. Total students in all three categories are 50% of total students in only C. The sum of total students who are in only B & C but not A and total students who are in only A & C but not B is 155. Total number of students who are in A & B but not C are 30 less than total number of students who are in only B.
If in only category A, 30% are boys. Find the total number of girls in only category A?
- A.
56
- B.
70
- C.
49
- D.
72
- E.
80
Attempted by 4 students.
Show answer & explanation
Correct answer: B
From the shared data, only A : only B : only C = 2 : 3 : 5, and the solved value gives only A = 100. If 30% of only A are boys, then 70% are girls. Girls in only A = 70% of 100 = 70.