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earnstyle [38]
3 years ago
11

It took boat to travel from pier A to pier B 5 hours going upstream. It made the return trip downstream in 3 hours and 30 minute

s. What is the distance between two piers, if the speed of the current is 3 mph?
Mathematics
2 answers:
aleksley [76]3 years ago
8 0
Distance =  speed * time
Upstream
d = 5 * (x - 3)
Downstream
d = 3.5(x + 3)        where d = distance beween piers  and x =  speed of the boat
    Equating:-
5x - 15 = 3.5x + 10.5
1.5x = 25.5
so x =   17 mph 

so d = 5(17) - 15 = 85-15  = 70 miles Answer
Assoli18 [71]3 years ago
4 0
9.5 miles, I think. (If not, I'm sorry!)
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