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

Question

4 years ago

4

speed of the current is 11 mph, what is the speed of the ferry?

1 answer:

gladu [14] · Answer 1 · 2022-01-08T05:40:16+03:00

<h2>Answer:</h2><h2>If the speed of the current is 11 mph, what is the speed of the ferry is 77 mph</h2>

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

$\frac{80}{x + 11} = \frac{60}{x - 11}$

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