document.write( "Question 1154679: At 9:30 car a started its journey at 65 km/h. At 11:00 car B started its journey and travelled at the same road as car a. If car b took 5 hours to catch up with car a find the speed of car b. \n" ); document.write( "
Algebra.Com's Answer #777171 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "The first car travels for 1.5 hours at 65mph before the second car starts. In that time it travels 65*1.5 = 97.5 miles.

\n" ); document.write( "The second car has to make up those 97.5 miles in 5 hours; the rate at which it must catch up to the first car is 97.5/5 = 19.5 miles per hour.

\n" ); document.write( "So the speed of the second car must be 19.5mph faster than the speed of the first car: 65+19.5 = 84.5mph.

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