5. If speed of boat and stream be y km/hr and x km/hr respectively. What is the
distance covered by up stream boat in 't' hours? *
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speed of baot is y km/hr
speed of stream is x km/h
Therefore, speed of boat in upstream direction will be (y-x)km/hr . where y>x
time given is 't' hours
we know that
distance=speed*time
distance= (y-x)/t km
hence, it will cover (y-x)/t km in t hours
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