Posted by ray on Monday, May 12, 2014 at 11:11pm.
Jake and Sara each drive 270 miles to attend a conference. Jake drives at an average
speed that is 15 mi/h slower than Sara’s average speed. It takes Jake 1.5 hours longer
than Sara to drive the 270 miles. How long does it Jake to make the trip?

math  Steve, Tuesday, May 13, 2014 at 12:08am
since time = distance/speed, If Jake's speed is x,
270/x = 270/(x+15) + 1.5
x = 45
So, it takes Jake 270/45 = 6 hours
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