Subject
Bank Exam
Topic
Bangladesh Bank 2010 (AD)
If a light flashes every 6 seconds, how many times will it flash in ¾ of an hour?
If a light flashes every 6 seconds, how many times will it flash in ¾ of an hour?
ক)
450 timesখ)
449 timesগ)
451 timesঘ)
550 timesExplanation
There are 60 minutes in an hour. In ¾ of an hour there are (60 * ¾) minutes = 45 minutes. In ¾ of an hour there are (60 * 45) seconds = 2700 seconds. Light flashed for every 6 seconds. In 2700 seconds 2700/6 = 450 times. The count start after the first flash, the light will flashes 451 times in ¾ of an hour.Related questions
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