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Question
Three bells toll together at intervals of 30, 36 and 45 minutes respectively. At what time will they toll together again if they toll simultaneously at 8 A.M?
Three bells toll together at intervals of 30, 36 and 45 minutes respectively. At what time will they toll together again if they toll simultaneously at 8 A.M?
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Solution
The correct option is B 11 A.M
The LCM =2×3×3×2×5=180 Thus, the three bells will toll together every 180 minutes.
After 180 minutes, that is 3 hours later from 8 A.M, so, at 11:00 AM.
11 A.M
The LCM =2×3×3×2×5=180 Thus, the three bells will toll together every 180 minutes.
After 180 minutes, that is 3 hours later from 8 A.M, so, at 11:00 AM.
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