document.write( "Question 1122487: Ndiba left the mall and traveled toward the lake. Two hours later Emily left traveling at 70 km/h in an effort to catch up to Ndiba. After traveling for three hours Emily finally caught up. What was Ndiba's average speed.
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Algebra.Com's Answer #738627 by ikleyn(52866) $\"\"$ $\"About$

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document.write( "Emily traveled 3 hours at 70 km/h and covered the distance of  3*70 = 210 kilometers.\r\n" );
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document.write( "Ndiba traveled the same distance of 210 kilometers in 2 + 3 = 5 hours.\r\n" );
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document.write( "Hence, Ndiba's average speed was   = 42 kilometers per hour.\r\n" );
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