a steamer goes downstream from one point to another in 7 hours. it covers the same distance upstream in 8 hours. if the speed of stream be 2km/hr. find the speed of the steamer in still water and the distance between the ports.
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the speed downstream =(X+2) km/hr
then the speed upstream =(x-2)km/hr
the distance covered in 7 hrs while going downstream 7(X+2)km
the distance covered in 8 hrs while going upstream 8(x-2)km
=> 7(X+2)= 8(x-2)
=> 7x+14= 8x-16
=> 14+16 = 8x-7x
=> 30 = X
=> X=30 km /hr
speed of steamer in still water = 30 km/hr
distance between ports= 7(30 +2)
=7×32
=224km
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Answer:
a
Step-by-step explanation:
a
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