A survey of n people in the town of badaville found that 50% of them prefer…
2024
A survey of n people in the town of badaville found that 50% of them prefer brand A. Another survey of 100 people in the town of chottaville found that 60% prefer brand A.In total 55% of all the people surveyed together prefer Brand A.What is the total number of people surveyed?
- A.
100
- B.
321
- C.
200
- D.
250
Attempted by 1377 students.
Show answer & explanation
Correct answer: C
Sol: 50% (n) + 60% (100 ) = 55% (n + 100)
Solving we get n = 100
So total number of people surveyed is 100 + n = 100 + 100 = 200