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A bus service number 4 leaves a terminus every 20 minutes. Service bus 8 and 3 leaves ever 25 and 30 minutes respectively. If all the three services leave together at 6.00 a.m, at what other times during day time do they leave together?

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 2 2025 30 
 2 1025 15 
 3 5 25 15
 5 5 25 5
 5 1 5 1
  1 1 1

2x2x3x5x5= 300 minutes
300/60= 5 hours
  6:00
+5:00
11:00 am

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