In an industrial area three factories give out sirens at an interval of 40 min, 1 hour and 1 and a half hour. respectively. Find the time between the two simultaneously sounds of three sirens
Answers
Answered by
1
Answer:
20 min and 30 min respectively
Answered by
0
Answer:
20 min to 1 hr
Step-by-step explanation:
Ans is correct
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