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Six bells commence tolling together and …

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Six bells commence tolling together and toll at intervals of 2 ,4,6,8,10,12 minutes respectively In 30 hour , how many times do they told together

Posted by Ganga Enterprises 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 4 years, 10 months ago

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10, 12 minutes respectively.

Hence, using LCM of the given numbers which is 120 we conclude that bell will toll together after 120 seconds = 2 minutes.

In 30 minutes they will toll together in 30/2 = 15 and 1 (at the starting).

Hence, total number of bells together is 15 + 1 = 16

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