Question
Jack jogged while Dana walked from the same place but in opposite directions along a straight road. After 4 hours, they were 28 km apart. Jack’s average speed was 1.4 km/h faster than Dana’s average speed. What was Dana’s average walking speed in km/h? Express your answer in decimal.
3 m

Click button first when a symbol is required. X

Jack jogged while Dana walked from the same place but in opposite directions along a straight road. After 4 hours, they were 28 km apart. Jack’s average speed was 1.4 km/h faster than Dana’s average speed. What was Dana’s average walking speed in km/h? Express your answer in decimal.