November 2021 Brain Puzzler Solution

Q: At 5 o’clock, it takes 5 seconds to strike 5 chimes on a chime clock. Assuming the chime takes negligible time, how long will 12 chimes take at 12:00?

A: 13.75 seconds
The total time is 5 seconds and there are 4 intervals between the chimes so each interval is 1.25 seconds.

At 12:00, there are 11 intervals between the chimes, therefore the chimes will take 11 x 1.25 seconds = 13.75 seconds.

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