question_answer

There are three poles X, Y and Z of different heights. Three spiders A, B and C start climbing up these poles at the same time. In each attempt, spider A climbs up the X pole 5 cms but slips back 1 cm, spider S climbs up the Y pole 6 cms but slips back 3 cms and spider C climbs up the Z pole 7 cms but slips back 2 cms. If each of the spiders make 50 attempts for reaching a top of the pole, then what is the height of the shortest pole?

A)  200 cms     

B)  250 cms      

C)  150 cms          

D)  153 cms