document.write( "Question 899368: Rates and ratios
\n" ); document.write( "1. on a 2 hour journey pertov drove at 90km/h for the first hour and 50km/h for the second hour. what was the average speed?\r
\n" ); document.write( "\n" ); document.write( "2. on a 200km journey, ogla drove at 90km/h for he first 100km and 50km/h for the rest. what was her average speed?
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Algebra.Com's Answer #545360 by ewatrrr(24785)\"\" \"About 
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1. (90+50)km/2hr = 70kmph
\n" ); document.write( "2. (90+110)km/3.3hr = 60.6kmph Note: \"100km%2F90kmph+=+1.1hr\" and\"110mi%2F55mph+=+2.2hr\"
\n" ); document.write( "the Idea is (Total miles)/(Total Time) = average speed
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