document.write( "Question 199596: Peter leaves at a speed of 16km/h and 1 1/2 hours later Bob starts out at 20 km/h. How long does it take until Bob has covered 1/2 Peter's distance? What distance will each have travelled at this point? \n" ); document.write( "
Algebra.Com's Answer #149997 by ankor@dixie-net.com(22740)\"\" \"About 
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Peter leaves at a speed of 16km/h and 1 1/2 hours later Bob starts out at 20 km/h.
\n" ); document.write( "How long does it take until Bob has covered 1/2 Peter's distance?
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\n" ); document.write( "Let t = Bob's travel time (in hrs)
\n" ); document.write( "then
\n" ); document.write( "(t+1.5) = Peter's travel time
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\n" ); document.write( "Write a distance equation dist = speed * time
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\n" ); document.write( "P's dist = twice B's dist
\n" ); document.write( "16(t+1.5) = 2(20t)
\n" ); document.write( "16t + 24 = 40t
\n" ); document.write( "24 = 40t - 16t
\n" ); document.write( "24t = 24
\n" ); document.write( "t = 1 hr for Bob to cover half Peter's distance
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\n" ); document.write( "What distance will each have traveled at this point?
\n" ); document.write( "P's dist: 16(1+1.5) = 40 km
\n" ); document.write( "B's dist: 20(1) = 20 km\r
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