4

Part of 2013 Junior Balkan Team Selection Tests - Moldova

Problems(1)

integer X degrees the angle betweeen hour and minutes

Source: 2013 Moldova JBMO TST p4

A train from stop

X

B

X

0 <X <60

). It is known that when starting from

A

, as well as when arriving at

B

, the angle formed by the hour and the minute had measure equal to

X

X