document.write( "Question 890161: jared is training to run a marathon. Today he ran 14 miles in 2 hours. After running the first 9 miles at a certain speed, he increased his speed by 4 miles per hour for the remaining five miles. Find the speed which Jared was running for the first nine miles. \n" ); document.write( "
Algebra.Com's Answer #538759 by richwmiller(17219)\"\" \"About 
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a+b=2,
\n" ); document.write( "r*a=9,
\n" ); document.write( "(r+4)*b=5
\n" ); document.write( "a = 3/2, b = 1/2, r = 6 r+4=10\r
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