In an examination 31 candidates passed chemistry 29bpassed physics and 3 failed both subjects.if 50 candidates sat for the examination, how many candidates passed physics only
If x passed both, then
31+29-x = 50-3
Then 29-x passed only physics
To find out how many candidates passed physics only, we need to subtract the candidates who passed both chemistry and physics from the total number of candidates who passed physics.
Given:
Total candidates = 50
Candidates who passed chemistry = 31
Candidates who passed physics = 29
Candidates who failed both subjects = 3
To find the number of candidates who passed physics only:
1. Subtract the number of candidates who passed both chemistry and physics from the total number of candidates who passed physics:
Number of candidates who passed physics only = Candidates who passed physics - Candidates who passed both chemistry and physics
Number of candidates who passed physics only = 29 - 3
Number of candidates who passed physics only = 26
Therefore, 26 candidates passed physics only in the examination.