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29 January, 23:50

Bobby is riding his bike down the road at a speed of 10 miles per hour. Ahead of him, he sees another rider, moving in the same direction. Bobby is catching up with the rider ahead of him. What is the estimated speed of the other rider? A) The same speed as Bobby's. B) Much faster than 10 mph. C) Slower than 10 mph. D) About 5 mph.

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  1. 30 January, 00:48
    They will be travelling slower than 10mph.

    if they were travelling at the same speed then they would stay an equal distance apart.

    if they were travelling fatser then they would be getting further away more quickly than Bobby is catching up.

    maybe they are travelling at 5mph but I'd say it's a safer option to chose under 10mph
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