A ferry can travel 80 miles with the current in the same amount of time it takes to travel 60 miles against the current. If the speed of the current is 11 mph, what is the speed of the ferry?

Step-by-step explanation:

Given , a ferry can travel 80 miles with the current in the same amount of time it takes to travel 60 miles against the current.

Speed of the current = 11 mph

Let the speed of the ferry be x

Therefore, the equation becomes

cross multiplying the equation, we get

80 (x - 11) = 60 (x + 11)

80x - 880 = 60x + 660

20x = 1540

x = 77

Speed of ferry = 77 mph

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step-by-step explanation:

b if for most of the graph

d if y intercept

step-by-step explanation: