Question

A watch becoms 12 second slow at Every 15 minutes.if on Sunday at 12o clock night the watch was 18 minutes fast, when will the watch show right time

Answer 1

the clock will show the right time when it will be 18 minutes slow so we will find when the clock will be 18 minutes slow 18 min means 1080 seconds

according to question after every 15 minutes the clock gets 12 second slow so in 1 hour clock gets 48 second slow

now the clock will get 18 min slow in 1080/ 48 hours = 22.5 hours means
after 22 hours and 30 minutes later the clock will be at its perfect time so the and is option A you can verify by adding 22.5 hrs in Sunday 12 O' clock nigt