anonymous
  • anonymous
nnette can repair a refrigerator in 60 minutes. Liza can repair a refrigerator 20 minutes faster. If they work together, how many minutes does it take them to repair the refrigerator?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@satellite73
mathstudent55
  • mathstudent55
Annette: 1 repair in 60 minutes In 1 minute, she does 1/60 of the repair Liza: 1 repair in 20 minutes. In 1 minute, she does 1/20 of the repair Working together, it takes them x minutes to repair the refrigerator, so in 1 minute, they do 1/x of the refrigerator repair. 1/60 + 1/20 = 1/x
mathstudent55
  • mathstudent55
Solve for x.

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