Q:
      
      
         
            
If a Siren sounds for every 5 seconds, how many times will it sound in ¾ of an hour?
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: A) 541 times         
         
Explanation: 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.
Siren sounds for every 5 seconds.
In 2700 seconds = 2700/5 = 540 times.
The count start after the first sound, the Siren will sound 541 times in ¾ of an hour.
       
      
      
      
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