2018
Mathematics
67ca00ce0c643c71d77dee1f
In a class of 40 students, 32 offer Mathematics, 24 offer Physics and 4 offer neither Mathematics nor Physics. How many offer both Mathematics and Physics?
A.
4
B.
8
C.
16
D.
20
Correct Answer: 20
Explanation
Let the number of people that offer both Mathematics and Physics = y Then, (32−y)+y+(24−y)+4=40 60−y=40⟹y=20 ∴ 20 students offer both Mathematics and Physics.
Let the number of people that offer both Mathematics and Physics = y Then, (32−y)+y+(24−y)+4=40 60−y=40⟹y=20 ∴ 20 students offer both Mathematics and Physics.THIS WEEK's
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