Question
Brandon jogged while Zoe walked from the same place but in opposite directions along a straight road. After 4 hours, they were 28 km apart. Zoe’s average speed was 1.8 km/h slower than Brandon’s average speed. What was Zoe’s average walking speed in km/h? Express your answer in decimal.
3 m

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Brandon jogged while Zoe walked from the same place but in opposite directions along a straight road. After 4 hours, they were 28 km apart. Zoe’s average speed was 1.8 km/h slower than Brandon’s average speed. What was Zoe’s average walking speed in km/h? Express your answer in decimal.