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In a school, students must take at least one of the subjects, Maths, Physics or Chemistry. In a group of 50 students, 7 take all three subjects. 9 take Physics and Chemistry only, 8 take Maths and Physics
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In a school, students must take at least one of the subjects, Maths, Physics or Chemistry. In a group of 50 students, 7 take all three subjects. 9 take Physics and Chemistry only, 8 take Maths and Physics only and 5 take Maths and Chemistry only. Of these 50 students,x take Maths only, x take Physics only and x+3 take Chemistry only. Draw a Venn diagram, find x, and hence find the number of taking Maths.

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User Vrtis
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Answer: The total taking math is 26

Step-by-step explanation: See picture.

Put what was given in the vendiagram, subtract what you know from the total (leaves 21 students unaccounted for). Write an equation with the unknowns (X) equal to 21 and solve for X.

In a school, students must take at least one of the subjects, Maths, Physics or Chemistry-example-1
User Roy Levy
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