Quantitative Aptitude Ques 2041

Question: Three bells chime at interval of 48, 60 and 90 min, respectively. If all the three bells chime together at 10: 00 am. At what time will all the three chime again that day

Options:

A) 1 : 00 pm

B) 2 : 00 pm

C) 8 : 00 pm

D) 10 : 00 pm

Show Answer

Answer:

Correct Answer: D

Solution:

  • We have to find out the LCM of 48,60 and 90

$ \therefore $ LCM $ =2\times 3\times 2\times 2\times 2\times 5\times 3 $ $ =720\min =\frac{720}{60}h=12h $

$ \therefore $ Bell chime together again at 10: 00 am + 12 h = 10: 00 pm

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