Question 975161: a car traveling with 5/7 of its acual speed covers 42 km in 1 hr 40 min48 sec.what is the actual speed of the car? Found 2 solutions by josmiceli, MathLover1:Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = actual speed in km/hr
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Convert time to hrs hrs hrs hrs
The actual speed is 35 km/hr
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check: km/hr
OK
You can put this solution on YOUR website!
let actual speed be
if a car traveling with of its actual speed,we have
if a car covers a distance in a time , then we have
....convert time to hours:
Therefore, 1 hr 40 min 48 sec = 1 + 2/3 + 1/75 hour = 126/75 hour
=
