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Out of the five subjects, the average marks of Suman in first 3 Subjects was 81 and the average marks in the last 3 subjects were 74. If her marks in the third subject were 65, then what were her average marks in all the subjects?
  • a)
    75
  • b)
    76
  • c)
    79
  • d)
    80
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Out of the five subjects, the average marks of Suman in first 3 Subjec...
Let the five subjects are a, b, c, d and e
Marks in third subject c = 65 given
Average marks in first three subjects = 81
⇒ (a + b + c)/3 = 81
⇒ a + b + c = 243
Average marks in last three subjects = 74
⇒ (c + d + e)/3 = 74
⇒ c + d + e = 222
⇒ 65 + d + e = 222
⇒ d + e = 222 – 65 = 157
Average marks of suman in all sub. = (a + b + c + d + e)/5 = (243 + 157)/5
∴ Average marks = 400/5 = 80
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Out of the five subjects, the average marks of Suman in first 3 Subjects was 81 and the average marks in the last 3 subjects were 74. If her marks in the third subject were 65, then what were her average marks in all the subjects?a)75b)76c)79d)80Correct answer is option 'D'. Can you explain this answer?
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Out of the five subjects, the average marks of Suman in first 3 Subjects was 81 and the average marks in the last 3 subjects were 74. If her marks in the third subject were 65, then what were her average marks in all the subjects?a)75b)76c)79d)80Correct answer is option 'D'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Out of the five subjects, the average marks of Suman in first 3 Subjects was 81 and the average marks in the last 3 subjects were 74. If her marks in the third subject were 65, then what were her average marks in all the subjects?a)75b)76c)79d)80Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Out of the five subjects, the average marks of Suman in first 3 Subjects was 81 and the average marks in the last 3 subjects were 74. If her marks in the third subject were 65, then what were her average marks in all the subjects?a)75b)76c)79d)80Correct answer is option 'D'. Can you explain this answer?.
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