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In a consignment of 800 bulbs, 6% are found defective on testing. One-third of those defective bulbs are repaired and sold along with the rest; the remaining defective bulbs are scrapped. What percent of the consignment finally reaches customers?

Competition practiceRatio, Percentage & Commercial Math
  • A94
  • B96
  • C98
  • D4

Step-by-Step Solution

Defective bulbs number 6% of 800 = 48, of which 16 are repaired and 32 scrapped. So 800 − 32 = 768 bulbs reach customers, and 768/800 = 96%. (94% scraps every defective bulb and ignores the repairs; 98% repairs two-thirds instead of one-third; and 4% is the share that is scrapped, which is what the question does NOT ask for.)
Answer: B) 96

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