A clock tower bell sounds to mark off every hour with the number of bells equal to the hour (three consecutive bells sound at three o'clock, etc). The last bell marks the exact beginning of the hour.

The sounding of the bells for six o'clocks starts at 30 seconds before six.

Assuming that the bells are always evenly and equally spaced in time, how long before noon must the sounding of the bells begin?

>think we should count the spacings between each ring. for 6 o'clock their are 5 spacings, each eqv to 30/5=6 seconds. At 12 o'clock their are 11 spacings, therefore time reqd for completing the rings = 11x6=66 sec. So the ringing should start 1min,6sec. before 12 o'clock.

Posted by maverick on 2002-11-30 00:26:28