document.write( "Question 499812: david drove a total of 300km. he drove during equal periodss of time , 80km/h , 90km/h and 100km/h . how much time did he spend driving at 90km/h ? the answer should be approximatly 1 1/9. \r
\n" ); document.write( "\n" ); document.write( "please get back to me as soon as possible and tell me how you got to your answer. \n" ); document.write( "

Algebra.Com's Answer #337866 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"t\"$ = the equal periods of time during which
\n" ); document.write( "he drove at 3 different speeds
\n" ); document.write( "given:
\n" ); document.write( " $\"+300+=+80t+%2B+90t+%2B+100t+\"$
\n" ); document.write( " $\"+300+=+270t+\"$
\n" ); document.write( " $\"+t+=+1+%2B+30%2F270+\"$
\n" ); document.write( " $\"+t+=+1+%2B+1%2F9+\"$
\n" ); document.write( "He drove 90 km/hr for 1 1/9 hr \n" ); document.write( "

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