Помоги сделать это задание пожалуйстаJames and John had set their pocket watches to the same time. Unknown to them, John's watch was running exactly two minutes per hour slow, and the watch belonging to James was going exactly ...

Помоги сделать это задание пожалуйста James and John had set their pocket watches to the  same time. Unknown to them, John's watch was running  exactly two minutes per hour slow, and the watch  belonging to James was going exactly a minute per hour  too fast. Later, when they checked their watches again, it  was discovered that the watch belonging to James was  exactly one hour ahead of John's watch.  How long had it been since they had originally set  their watches?