Lamp posts are placed 30 metres apart along the road how long will a car travelling at 45 km an hour take to pass 6 lamp posts not counting the first of them
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answer is 14 4 second
speed = distance /time
time = (5lamp posts × .030)/ 45=0.004 ×3600=14.4 s
speed = distance /time
time = (5lamp posts × .030)/ 45=0.004 ×3600=14.4 s
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