Math, asked by dconde12, 1 year ago

Two gongs strike at intervals of 40 & 60 minutes, what time will they strike again if they both strike at 12 noon

Answers

Answered by TooFree

3

Find the prime factors:

40 = 2³ x 5

60 = 2² x 3 x 5

Find the LCM:

LCM = 2³ x 3 x 5 = 120 mins

Find the time that they will strike together again:

12 noon + 120 mins = 12pm + 2 hours = 2 pm

Answer: They will strike together again at 2pm

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