<PRE><B>Question 828437</B>
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s = d/t
t = d/s
d = t*s
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head start:
d = 2*50
d = 100 miles
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relative speed:
s = 70 - 50
s = 20 mph
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time to over take:
t = 100/20
t = 5 hours
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Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
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Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
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Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php</PRE>