in a class of 50 students, 27 like Mathematics and 32 like Biology and every single student has at least one liked subject. How many students like both Mathematics and Biology?
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1
Answer:
9
Step-by-step explanation:
Total students [X] = 50
Mathematics [Y] = 27
Biology [Z] = 32
Students who like both subjects = [A]
Formula to find students who like both subjects
= [Y+Z] - X = A
= [27+32] - 50 = A
= 59 - 50 = A
= 9 = A
Con = 9 students like both Mathematics and Biology
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