document.write( "Question 1063036: a toy car travels from A to B at a constant speed of 20km/h and immediately returns to A at a constant speed v. if average speed of the car is 24km/h the find v? \n" ); document.write( "

Algebra.Com's Answer #678041 by josgarithmetic(39617) $\"\"$ $\"About$

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Constant Travel Rates Rule, RT=D to relate rate, time, distance.
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document.write( "               SPEED      TIME         DISTANCE\r\n" );
document.write( "A to B          20        d/20          d\r\n" );
document.write( "B to A           v        d/v           d\r\n" );
document.write( "Totals                    d/20+d/v     2d\r\n" );
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document.write( "Average         24\r\n" );
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\n" ); document.write( "\n" ); document.write( "Average rate expression is $\"%282d%29%2F%28d%2F20%2Bd%2Fv%29\"$ and the value is given.\r
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\n" ); document.write( "\n" ); document.write( " $\"highlight_green%28%282d%29%2F%28d%2F20%2Bd%2Fv%29=24%29\"$
\n" ); document.write( "Simplify this and solve for v.
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