17. In a morning walk, three persons step off
together. Their steps measure 80 cm, 85
cm and 90 cm, respectively. What is the
minimum distance each should walk so
that all can cover the distance in complete
steps?
(a) 135 m 60 cm (b) 150 m 40 cm
(c) 150 m
(d) 122 m 40 cm
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