During the warranty period,15% of all model X computers require a warranty repair. Among the model X computers requiring a warranty repair. 50% require only a main board replacement and 20% require only a battery replacement, while 10% require both main board and battery replacement. What % of all model X computers will need to have atleast the main board or battery replaced during the warranty period?

• 15% of all model X computers require a warranty repair.
  It says AT LEAST, so it means main board 50% or battery 20% or BOTH 10%.
  Therefore 50% + 20% +10% = 80%
  0.15 * 0.80 = 0.12
  12% of all model X computers will need to have atleast the main board or battery replaced during the warranty period
• 5 years agoHelpfull: Yes(16) No(2)
• During the warranty 15% of ALL model X computers require a repair.
  The if statement: What % will need to have the main board OR battery replaced during the warranty period?
  50% + 20% = 70%
  15/100 = 0.15 * 70 = 10.5%
  Therefore 10.5% of all model X computers.
• 5 years agoHelpfull: Yes(2) No(10)
• should be 12%
• 5 years agoHelpfull: Yes(1) No(6)
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• 5 years agoHelpfull: Yes(1) No(4)