At an international airport plane takes off from five different runways 3,4,8,12,15 mins interval. At 7:30am planes took off from all five runways
simultaneously. When will they next take off together again?
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Answer:
9:30 AM
Step-by-step explanation:
Find the LCM of 3,4,8,12,15, which is 120, so the planes would take off in 120 mins at the same time. Add 120 minutes to 7:30
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