A truck and avan started off at 9 a.m.from opposite ends of a highway.The truck travelled at a speed of 40 km/hr and the van at a speed of 60 km/hr.If they passed each other at 12 noon,what was the length of the highway?
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Materials like air, water, and clear glass are called transparent. When light encounters transparent materials, almost all of it passes directly through them. Glass, for example, is transparent to all visible light. Translucent objects allow some light to travel through them.
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2 because the twelve ans
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