There are 90 students in a class, out of which 70% are from village A and others are from village B. The average score of students from village B in a test is 20% more than that from village A. If the average score of all the students is 53, then what is the average score of the students from village B?
Show answer & explanation
Correct answer: B
Explanation
Correct Answer is option 2 i.e. 60
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Understanding |
Application |
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Given Total students = 90 70% from village A = 63 Rest from village B = 90 – 63 = 27
Suppose average score of students from village A = x Then Average score of students from village B = 1.2x |
Average score of all the students is 53: Hence, x × 63 + 1.2x × 27 = 53 × 90 63x + 32.4x = 4770 95.4x = 4770 x = 50 Average score of students from village B = 1.2x = 60 |