Ehsan18
  • Ehsan18
Q50. Twelve students in a class average 70% on a certain test. Eighteen others average 80%. What is the overall average of the thirty students as a percent?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Ehsan18
  • Ehsan18
the attachment shows the question in better form
1 Attachment
ganeshie8
  • ganeshie8
Twelve students in a class average 70% Eighteen others average 80% so sum of scores of 30 students = 12*70 + 18*80 = 2280
ganeshie8
  • ganeshie8
divide that by 30 for the overall average

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