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CBSE Class 8 Answered

a man drives at the 35 kilometre per hour he reaches his house 4 minutes late. if he drives at the 45 kilometre per hour he reaches his office 3 minutes early how far is his house.

 

Asked by vishupatil11397 | 27 Sep, 2019, 07:22: PM
Expert Answer
Let space the space straight d space be space the space distance space straight t space be space the space time space
straight d equals straight s cross times straight t
case space 1
straight d equals 35 cross times open parentheses straight t plus 4 over 60 close parentheses
straight d minus 35 straight t equals 14 over 6... open parentheses 1 close parentheses
case space 2
straight d equals 45 cross times open parentheses straight t minus 3 over 60 close parentheses
straight d minus 45 straight t equals fraction numerator negative 9 over denominator 4 end fraction... open parentheses 2 close parentheses
solve space left parenthesis 1 right parenthesis space and space left parenthesis 2 right parenthesis simultaneously
straight d equals 147 over 8
straight t equals 11 over 24
Answered by Arun | 28 Sep, 2019, 07:28: PM
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