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Question 77

A battery's rated cycles start at 600, rise by 15%, then fall by 10%. Which calculation does NOT apply the successive-multiplier method correctly?

  1. 600 × 1.15 × 0.90
  2. 690 × 0.90
  3. 600 × 1.15 - 69
  4. 600 × 1.05Bonne réponse

Explication

The correct chain is 600 × 1.15 × 0.90 = 621, because the 10% fall acts after the rise. Using 600 × 1.05 = 630 merely adds the signed rates and loses the interaction between the changes.

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Question 77: A battery's rated cycles start at 600, rise by 15%, then… · Percentages · Questena