How many times do the minute and hour hand of a clock coincide in a day?

Question

Length of minute hand of a clock is 14cm and hour hand is 10cm, find the difference of distance covered by the tip these two in 15 min?

Answer 1

since 24 hours in one day since in every hour it coincides

Answer 2

In a day=12 times
In a night =12 times

In 24 hrs=24 times
ie
Every hour it coincide