Question 1109996
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Since Jack runs 5 miles when Diane runs 4, the ratio of their speeds is 5:4.<br>
So let their speeds be represented by 5x and 4x.<br>
Then, since we know Jack's speed is 2 mph faster than Diane's,<br>
{{{5x-4x=2}}}
{{{x = 2}}}<br>
Jack's speed is 5x = 10 mph
Diane's speed is 4x = 8 mph