SOLUTION: A riverboat travelling with the current can go 30 km in 1 hour, on the return trip against the current it took 1.5 hours to travel the 30 km. Which of the following would represent

Question 1199502: A riverboat travelling with the current can go 30 km in 1 hour, on the return trip against the current it took 1.5 hours to travel the 30 km. Which of the following would represent a linear system that could be used to determine the speed of the riverboat and the current where x is the speed of the riverboat and y is the speed of the current?

Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
x, speed of boat in absence of a current
y, the speed of river current
Same distance each way

SPEED TIME DISTANCE(k.m.) WITH CURRENT x+y 1 30 AGAINST CURRENT x-y 1.5 30

---------basic rule

Notice time for "with current" is 1 hour...

------Or whatever is equivalent.

You might try, .

Better still, .
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

A riverboat travelling with the current can go 30 km in 1 hour, on the return trip against the current it took 1.5 hours to travel the 30 km. Which of the following would represent a linear system that could be used to determine the speed of the riverboat and the current where x is the speed of the riverboat and y is the speed of the current?

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