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1 year ago

14

Emily drove to the ferry office and back. The trip there took four hours and the trip back took six hours. She averaged 20 km/h

on the return trip. Find the average speed of the trip there.

1 answer:

Lisa [10]1 year ago

3 0

Answer:

on the way there she was going at 25 km/hr

Step-by-step explanation:

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2 years ago

Read 2 more answers

Answer this quickly please!

rodikova [14]

Answer:

$\bar v = 60\,mph$

Step-by-step explanation:

The distance travelled by Lisa in the first four hours of her trip is:

$\Delta s = \left(50\,mph)\cdot (4\,h)$

$\Delta s = 200\,mi$

The distance remaining and her average speed are, respectively:

$\Delta s_{R} = 440\,mi - 200\,mi$

$\Delta s_{R} = 240\,mi$

$\bar v = \frac{240\,mi}{4\,h}$

$\bar v = 60\,mph$

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