SOLUTION: the average speed of car is twice the speed of the truck,truck covers 648km in 24 hours,hom much the car cover in 15 seconds?

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Question 956910: the average speed of car is twice the speed of the truck,truck covers 648km in 24 hours,hom much the car cover in 15 seconds?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The truck's speed is:
+648+%2F+24+ km/hr
-------------------
The car's speed is:
+2%2A%28+648+%2F+24+%29+=+648%2F12+
+648%2F12+=+54+ km/hr
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In terms of just units:
[ km/hr ]x( hrs/min ]x[ min/sec ] = km/sec
then,
[ km/sec ]x[ sec ] = km
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+54%2A%28+1%2F60+%29%2A%28+1%2F60+%29+ = .015 km/sec
and
+.015%2A15+=+.225+ km
-----------------------
convert to meters
[ km ] x [ m/km ] = m
+.225%2A%28+1000%2F1+%29+=+225+
The car goes 225 m in 15 sec