Question 1125721
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Mary left the city travelling at 71 mph, <b>while, at the same time</b>, Tom
left the city going the opposite direction at a speed of 51 mph. Find the
time Mary travelled before the two were 163 miles apart.
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{{{(71+51)*x=163}}}


{{{x=163/122}}}


{{{x=1.336}}}{{{hours}}}