Question 934766
x = speed of the child on still sidewalk
y = speed of moving sidewalk
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s = d/t
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against the sidewalk's motion:
x - y = 78/13
x - y = 6
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with the sidewalk's motion:
x + y = 80/8
x + y = 10
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put the system of linear equations into standard form
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x - y = 6
x + y = 10
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copy and paste the above standard form linear equations in to this solver:
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solution:
x = speed of the child on still sidewalk = 8 ft/sec
y = speed of moving sidewalk = 2 ft/sec
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