document.write( "Question 1090621: An 8m long bus, travelling at a speed of 30km/h, entered a tunnel. It to0k 3 minutes to come out completely the other end. Find the length of the tunnel. \n" ); document.write( "

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An 8m long bus, travelling at a speed of 30km/h, entered a tunnel.
\n" ); document.write( " It to0k 3 minutes to come out completely the other end. Find the length of the tunnel.
\n" ); document.write( ":
\n" ); document.write( "let x = the length of the tunnel in meters
\n" ); document.write( "then
\n" ); document.write( "(x+8) = the length of the tunnel and the bus
\n" ); document.write( ":
\n" ); document.write( "Change 30 km/ hr to meters/min
\n" ); document.write( " $\"%28%2830%2A1000%29%29%2F60\"$ = 500 m/min
\n" ); document.write( ":
\n" ); document.write( " $\"%28x%2B8%29%2F500\"$ = 3
\n" ); document.write( "x + 8 = 3*500
\n" ); document.write( "x = 1500 - 8
\n" ); document.write( "x = 1492 meters is the length of the tunnel
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