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A student scored 80, 85, 90, and 95 in four subjects. What score does he need in the fifth subject to achieve an average of 90?

Practice Questions

1 question
Q1
A student scored 80, 85, 90, and 95 in four subjects. What score does he need in the fifth subject to achieve an average of 90?
  1. 90
  2. 95
  3. 100
  4. 105

Questions & Step-by-step Solutions

1 item
Q
Q: A student scored 80, 85, 90, and 95 in four subjects. What score does he need in the fifth subject to achieve an average of 90?
Solution: Mean = (80 + 85 + 90 + 95 + x) / 5 = 90. Solving gives x = 100.
Steps: 0

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