Question 717185: what is the average speed of a car if the car travels 214 km in 4 hours and 45 minutes
Answer by jndarrell(58)   (Show Source):
You can put this solution on YOUR website! 4 hours and 45 minutes is = to 4.75 (45minutes is 3/4 of an hour which equals 0.75)
Proportion set up:
214km over 4.75hrs is = to 'x'km/1hr (Keep your units matching, km on top on both side and hours on bottom of both sides or vice versa)
CROSS MULTIPLY
214=4.75x
DIVIDE BOTH SIDES BY 4.75 to get 'x' alone
x=45.05km/hr (rounded to the hundreth)
Check your instructions for guidance on rounding, and don't forget to put your units.
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