Question
Julian jogged while Jean walked from the same place but in opposite directions along a straight road. After 3 hours, they were 21 km apart. Jean’s average speed was 1.4 km/h slower than Julian’s average speed. What was Jean’s average walking speed in km/h? Express your answer in decimal.
3 m

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Julian jogged while Jean walked from the same place but in opposite directions along a straight road. After 3 hours, they were 21 km apart. Jean’s average speed was 1.4 km/h slower than Julian’s average speed. What was Jean’s average walking speed in km/h? Express your answer in decimal.