document.write( "Question 544056: In a 75 m race if ace gives flash a 15 m head start, ace and flash will tie. If flash gives speedy a 15 m head start, flash and speedy will tie. At these rates how many meters head start should ace give speedy for ace and speedy to tie in a 75 m race? \n" ); document.write( "
Algebra.Com's Answer #355044 by ankor@dixie-net.com(22740)\"\" \"About 
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In a 75 m race if ace gives flash a 15 m head start, ace and flash will tie.
\n" ); document.write( " If flash gives speedy a 15 m head start, flash and speedy will tie.
\n" ); document.write( " At these rates how many meters head start should ace give speedy for ace and speedy to tie in a 75 m race?
\n" ); document.write( ":
\n" ); document.write( "Let's assign a speed to Ace, 10 m/sec, then find Flashe's speed
\n" ); document.write( ":
\n" ); document.write( "Write a time equation, time = dist/speed, let f = Flashe's speed
\n" ); document.write( "a's time = f's time
\n" ); document.write( "\"75%2F10\" = \"60%2Ff\"
\n" ); document.write( "Cross multiply
\n" ); document.write( "75f = 10*60
\n" ); document.write( "f = \"600%2F75\"
\n" ); document.write( "f = 8 m/sec is Flashes speed
\n" ); document.write( ":
\n" ); document.write( "Do the same with Flash and speedy
\n" ); document.write( "f's time = s's time
\n" ); document.write( "\"75%2F8\" = \"60%2Fs\"
\n" ); document.write( "75s = 8*60
\n" ); document.write( "s = \"480%2F75\"
\n" ); document.write( "s = 6.4 m/sec is Speedy's speed
\n" ); document.write( ":
\n" ); document.write( "Write a time equation for Ace and Speedy
\n" ); document.write( "let d = distance covered by speedy while Ace covers 75 m
\n" ); document.write( "\"75%2F10\" = \"d%2F6.4\"
\n" ); document.write( "10d = 75*6.4
\n" ); document.write( "10d = 480
\n" ); document.write( "d = 48 meters
\n" ); document.write( "therefore
\n" ); document.write( "Ace should give Speedy 75-48 = 27 m head start for them to finish at the same time
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