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If a light flashes every 6 seconds, starting with a flash at the beginning, how many times will it flash in \(\frac{3}{4}\) of an hour?

Question and options

If a light flashes every 6 seconds, starting with a flash at the beginning, how many times will it flash in 34\frac{3}{4} of an hour?
  1. 450
  2. 451
  3. 350
  4. 425

Answer and explanation

Correct answer: B - 451
34\frac{3}{4} hour = 2700 s; 27006=450\frac{2700}{6} = 450 intervals, so counting the flash at the start there are 451 flashes.

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