# Relativistic problem ?

I was thinking,

Suppose there are three boys in one room. A B C. They time there watches perfectly with each other. In each of their watches the time is 6:00. Boy A starts flying around with velocity {[3^(1/2)]/2}.c.........he flies and boys B sees that the time on A's watch is ticking slowly. But boy A thinks that it is B who is moving and so when he looks at B's clock he thinks that it is ticking slowly. The boy B and A come to rest after 30 mins.(on B's clock)...... Now they talk with each other, A and B... A says that since B was moving with high speed( As he thinks), his clock ticked slower and thats why B's clock is at 6:15.....and he is looking at B's clock ticking at 6:15. B says that "no".....U moved with high speed, my clock is at 7:00, urs is at 6:30.....B claims that since A was moving his clock slowed down.......and he is looking at A's clock and in it is 7:00 pm.........

Mr. C comes, he observes both watches...........what is this??? what will he see??? Why is it that A , and B, aftter B's flight; are looking at the same watches and observing different times????