document.write( "Question 110307This question is from textbook
\n" ); document.write( ": Susie left her home at 11 am traveling along Route 1 at 30 miles per hour. At I pm, her brother Richard left home and started after her on the same road at 45 miles per hour. At what time did Richard catch up to Susie. I know the formula t=d/r but how do you plug in everything since there are more steps. Thank You! \n" ); document.write( "

Algebra.Com's Answer #80359 by solver91311(24713) $\"\"$ $\"About$

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Robert started 2 hours later than Susie, so by the time Robert started, Susie had traveled $\"d=30%2A2=60\"$ miles. Robert is traveling 15 miles per hour faster than Susie $\"45+-+30+=+15\"$ , so the question becomes: How long does it take to cover 60 miles at 15 mph?
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\n" ); document.write( " $\"t=60%2F15=4\"$ , so it takes him 4 hours to catch up. \n" ); document.write( "

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