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An electronic device makes a beep after every 12 minutes. Another device makes a beep after every 18 minutes. They beeped together at 6 a.m. At what time they next beep together?

  • a)
    7 a.m.

  • b)
    6.50 a.m.

  • c)
    6.36 a.m.

  • d)
    None of these 

Correct answer is option 'C'. Can you explain this answer?
Verified Answer
An electronic device makes a beep after every 12 minutes. Another devi...
LCM of 12 and 18 = 36 minutes. 6 a.m. & 36 minutes = 6 : 36 A.M.
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Most Upvoted Answer
An electronic device makes a beep after every 12 minutes. Another devi...
Explanation:

Step 1: Finding the LCM of 12 and 18
To find out when both devices will beep together again, we need to find the least common multiple (LCM) of 12 and 18.
Factors of 12: 1, 2, 3, 4, 6, 12
Factors of 18: 1, 2, 3, 6, 9, 18
The common factors are 1, 2, 3, and 6. So, the LCM of 12 and 18 is 36.

Step 2: Determining the time of next beep
Since both devices beeped together at 6 a.m., the next time they will beep together will be after 36 minutes.
Adding 36 minutes to 6 a.m.:
6:00 a.m. + 36 minutes = 6:36 a.m.
Therefore, the next time both devices will beep together is at 6:36 a.m.
So, the correct answer is option C) 6.3 a.m.
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An electronic device makes a beep after every 12 minutes. Another device makes a beep after every 18 minutes. They beeped together at 6 a.m. At what time they next beep together?a)7 a.m.b)6.50 a.m.c)6.36 a.m.d)None of theseCorrect answer is option 'C'. Can you explain this answer?
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An electronic device makes a beep after every 12 minutes. Another device makes a beep after every 18 minutes. They beeped together at 6 a.m. At what time they next beep together?a)7 a.m.b)6.50 a.m.c)6.36 a.m.d)None of theseCorrect answer is option 'C'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about An electronic device makes a beep after every 12 minutes. Another device makes a beep after every 18 minutes. They beeped together at 6 a.m. At what time they next beep together?a)7 a.m.b)6.50 a.m.c)6.36 a.m.d)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An electronic device makes a beep after every 12 minutes. Another device makes a beep after every 18 minutes. They beeped together at 6 a.m. At what time they next beep together?a)7 a.m.b)6.50 a.m.c)6.36 a.m.d)None of theseCorrect answer is option 'C'. Can you explain this answer?.
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