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Two race cars travel in a ways at 90kmph and 120kmph respectively. if d secound cars take 30min less than the first car ,find the distance covered to complete the race .

Asked by Mdazharuddin184 24th February 2019, 2:46 AM
Answered by Expert
let space straight D space be space the space distance comma space straight T space time space and space straight S thin space speed
straight T equals straight D over straight S
DIfference space in space straight T space equals 30 min equals 30 over 60 hrs equals space straight D over 90 minus straight D over 120
straight D over 90 minus straight D over 120 equals 30 over 60
straight D equals 180 Km
Answered by Expert 25th February 2019, 11:43 AM
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