54. There are two clocks, both set to show 10 pm on21st January 2010.

1.	54. There are two clocks, both set to show 10 pm on21st January 2010. One clock gains 2 minutes in anhour and the other clock loses 5 minutes in an hour.Then by how many minutes do the two clocks differat 4 pm on 22nd January 2010?
Answer» Number of hours between 10 pm on 21st January 2010 and 4 pm on 22nd January 2010= 18 hours First clock gains 2 min every hour. Then time it will show= 18 hours + 218 min= 4:36 pm Second clock loses 5 min every hour. Then time it will show= 18 hours - 518 min= 18 hours - 90 min= (18 - 1.5) hours= 16.5 hours= 2:30 pm

54. There are two clocks, both set to show 10 pm on21st January 2010. One clock gains 2 minutes in anhour and the other clock loses 5 minutes in an hour.Then by how many minutes do the two clocks differat 4 pm on 22nd January 2010?

Answer»

Number of hours between 10 pm on 21st January 2010 and 4 pm on 22nd January 2010= 18 hours

First clock gains 2 min every hour. Then time it will show= 18 hours + 2*18 min= 4:36 pm

Second clock loses 5 min every hour. Then time it will show= 18 hours - 5*18 min= 18 hours - 90 min= (18 - 1.5) hours= 16.5 hours= 2:30 pm