document.write( "Question 1023896: In car front & rear wheel diameter is 21 &24 cm find no. Of revolution that the rear wheel makes to cover the distance which front wheel covers in 21 cm at a speed of 252km per hour \n" ); document.write( "

Algebra.Com's Answer #639426 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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\n" ); document.write( " In a car the front & rear wheel diameter is 21 & 24 cm.
\n" ); document.write( " Find the no. of revolutions that the rear wheel makes to cover the distance which front wheel covers in 2 sec at a speed of 252km per hour
\n" ); document.write( ":
\n" ); document.write( "Find the circumference of both wheels:
\n" ); document.write( " $\"pi%2A21\"$ = 65.973 cm
\n" ); document.write( " $\"pi%2A24\"$ = 75.398 cm
\n" ); document.write( ":
\n" ); document.write( "Find the distance in meters traveled in 2 sec at 252 km/hr
\n" ); document.write( "2 * $\"%28252%2A1000%29%2F3600\"$ = 140 meters
\n" ); document.write( "Change to cm: 140*100 = 14000 cm
\n" ); document.write( ":
\n" ); document.write( "Find the no. of rev the rear wheel makes to travel 14000 cm
\n" ); document.write( " $\"14000%2F75.398\"$ = 185.7 rev
\n" ); document.write( "During this time the front wheel travels the same dist but makes
\n" ); document.write( " $\"14000%2F21\"$ = 212.2 rev
\n" ); document.write( ":
\n" ); document.write( "note that the ratio of the rev of the two wheels
\n" ); document.write( "185.7/212.2 = .875 the same as 21/24 = .875 \n" ); document.write( "

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