1.

11 Speed 20 sec = 18 sec eds 8 km h- and 11 km h-1. They start running ween them after 2 hours, if they run in the (ii) opposite directions (moving away f = Difference between the distances cove Sum of the distances covered by P hours = speed x time​

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Step-by-step explanation:

11 Speed 20 sec = 18 sec eds 8 km h- and 11 km h-1. ... WEEN them after 2 hours, if they RUN in the (II) opposite directions



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