Question
The average score of a student increased by 5 marks when
he scored 210 marks in his 60th test. Find the average score of the student after 60 tests.Solution
ATQ, Let the average score of the student in 59 tests be ‘x’ So according to the question: 59x + 210 = 60 × (x + 5) 59x + 210 = 60x + 300 x = 210 - 300 x = 90 So, the average score of the student after 60 tests = 90 + 5 = 95 marks
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