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Theresab2021
23.06.2019 •
Mathematics
Two hikers start from the same point and hike in opposite directions around a lake whose shoreline is 15 mi long. one hiker walks 0.5 mph faster than the other hiker. how fast did each hiker walk if they meet in 2 h?
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Ответ:
Step-by-step explanation:
Let the distance the slower hiker travels=d,
the distance the faster hiker travels=15-d (Since, the sum of the distances they walk is 15mi).
Let the speed of the slower hiker in mi/hr=s,
the speed of the faster hiker=s+0.5
Now, equation for the slow hiker:
and equation for the faster hiker:
Now, substituting the equation (1) in equation (2),
and![s+0.5=3.5+0.5=4.0](/tpl/images/0009/5833/e9175.png)
The speed of the slower hiker is
and The speed of the faster hiker is
.
Ответ:
(a+b)(a-b)
Step-by-step explanation: