You start off from home and drive to your friends place. you left home at 2 pm, and arrived at her place at 2:40 pm. your odometer says that you have driven 25km. what was your speed in km/h?

1 Answer
Alan P.
May 6, 2018

Speed: #62.5# km/h

Explanation:

If your average speed was #x# km/hr and given that you traveled #25# km in #40# minutes (#=40/60=2/5# hr)
#color(white)("XXX")2/5 " hr" xx x " km/hr"=25" km"#

#color(white)("XXX")rArr x" km/hr" =(25" km")/color(white)(1) xx 5/(2" hr")=125/2 " km/hr"=62.5 " km/hr"#

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