Multiple choice

The average score of 16 students in a test is 85. If four more students take the test and their average is 90, find the new overall average score.

  1. 86

  2. 87

  3. 88

  4. 90

  5. 89
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total score of 16 students = 16 * 85 = 1360. Total score of 4 students = 4 * 90 = 360. New total = 1720. New average = 1720 / 20 = 86.

AI explanation

The total score of the 16 students is 16 multiplied by 85, which equals 1360. The total score of the four new students is 4 multiplied by 90, equaling 360. The combined overall total is 1360 plus 360, equaling 1720; dividing this by the new total of 20 students gives 1720 divided by 20, which is 86. The result is A.

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