Question
The average score of 10 students in a class is 85. After
adding the scores of 5 new students, the average score becomes 90. What is the total score of the 5 new students?Solution
Total score of 10 students = 10 × 85 = 850  Total score after adding 5 students = 15 × 90 = 1350  Total score of 5 new students = 1350 - 850 = 500  The total score of the 5 new students is 500.
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