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Travka [436]
3 years ago
5

In an examination, 80 students secured

Mathematics
1 answer:
faust18 [17]3 years ago
3 0

Number of students who secured first class in English only is 20

Step-by-step explanation:

  • Step 1: Find the number of students who secured first class in English only.

Total number of students who secured first class in English or Maths, T = 80

Number of students who secured first class in Maths, M = 50

Number of students who secured first class in both English and Maths, EM = 10

⇒ Let the number of students who secured first class in English only be x.

Total students with first class, T = M + EM + x

⇒ 80 = 50 + 10 + x

⇒ 80 = 60 + x

∴ x = 80 - 60 = 20

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