# Time, speed and distance

Q)The distances from A to B , B to C and C to D, are 12 kms each.A man runs from A to B at a speed of X km/ per hr.After reaching B, he rests for X hours and runs from B to C at double the previous speed. At C he rests for 2 hours and runs from C …

Q)The distances from A to B , B to C and C to D, are 12 kms each.A man runs from A to B at a speed of X km/ per hr.After reaching B, he rests for X hours and runs from B to C at double the previous speed. At C he rests for 2 hours and runs from C to D at double his speed from B to C. He reaches D in 16 hours after starting from A.The a possible value of X is?

SOL) X=3,7/3
Ans IS 3..
But How?

A and B are competing with each other in a friendly community competition in a pool of 50 m length and the race is for 1000 m. A crosses 50 m in 2 min and B in 3 min 15 sec. each time they meet/cross each other,they do handshake's.how many such handshake's will happen?(they both start from the same end at the same time.) PLZ share the appr.

A goes out sometime btwn 4 and 5 o'clock. when he gets back at around sometime btwn 5 and 6 o'clock, he notices that the hour hand and minute hand have exchanged positions, with the positions initially when he left. when did he left and when he comes back?