document.write( "Question 938406: A motorist does the first part of the journey at an average speed of 54 km/h. He then increases his speed to 60 km/h for the rest of the journey. If he travels 225 km in 4 hours, what is the distance traveled for the first part of his journey? \n" ); document.write( "
Algebra.Com's Answer #571668 by ewatrrr(24785)\"\" \"About 
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x the distance for the first part of his journey
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\n" ); document.write( "\"x%2F%2854kmph%29+%2B+%28224-x%29%2F%2860kmph%29+=+4hr\" |Multiplying thru by 540 so as all denominators = 1
\n" ); document.write( "10x + 9(224-x) = 2160
\n" ); document.write( "x = 144mi, the distance for the first part of his journey
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